@article{GruetersBlank1990,
  author    = {Gr{\"u}ters, Hugo and Blank, K.},
  title     = {Contribution to the size effect on the strength of flat glass. Blank, K.; Gr{\"u}ters, H.},
  series = {Glastechnische Berichte. 63 (1990), H. 5},
  journal   = {Glastechnische Berichte. 63 (1990), H. 5},
  isbn      = {0017-1085},
  pages     = {135 -- 140},
  year      = {1990},
  language  = {en}
}
@article{GruetersHacklWillms1990,
  author    = {Gr{\"u}ters, Hugo and Hackl, K. and Willms, H.},
  title     = {Stress and strain analyses of rectangular glass plates for large deformations. Part 2. Calculation of fracture probabilities in rectangular plates under area load},
  series = {Glastechnische Berichte. 63 (1990), H. 4},
  journal   = {Glastechnische Berichte. 63 (1990), H. 4},
  isbn      = {0017-1085},
  pages     = {93 -- 95},
  year      = {1990},
  language  = {en}
}
@article{GruetersHacklWillms1990,
  author    = {Gr{\"u}ters, Hugo and Hackl, K. and Willms, H.},
  title     = {Stress and strain analyses of rectangular glass plates for large deformations. Part 1. Dimensioning of rectangular plates under surface load and/or line load.},
  series = {Glastechnische Berichte. 63 (1990), H. 3},
  journal   = {Glastechnische Berichte. 63 (1990), H. 3},
  isbn      = {0017-1085},
  pages     = {69 -- 77},
  year      = {1990},
  language  = {en}
}
@article{HagemannGeittner1990,
  author    = {Hagemann, Hans-J{\"u}rgen and Geittner, P.},
  title     = {PCVD hybrid technology for single mode fibres. Hagemann, H. J.; Geittner, P.},
  series = {Proceedings : papers presented at: the 8th Annual European Fibre Optic Communications and Local Area Networks Exposition},
  journal   = {Proceedings : papers presented at: the 8th Annual European Fibre Optic Communications and Local Area Networks Exposition},
  pages     = {67 -- 72},
  year      = {1990},
  language  = {en}
}
@article{HagemannUngelenkWiechert1990,
  author    = {Hagemann, Hans-J{\"u}rgen and Ungelenk, J. and Wiechert, D. U.},
  title     = {Optical time domain reflectometry (OTDR) of diameter modulations in single-mode fibers. Hagemann, H. J.; Ungelenk, J.; Wiechert, D. U.},
  series = {Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 8 (1990), H. 11},
  journal   = {Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 8 (1990), H. 11},
  isbn      = {0733-8724},
  pages     = {1641 -- 1645},
  year      = {1990},
  language  = {en}
}
@book{Harder1990,
  author    = {Harder, J{\"o}rn},
  title     = {Zur Messung von Werkstoffparametern im Torsionsschwingversuch},
  address   = {Braunschweig},
  pages     = {90 S.},
  year      = {1990},
  language  = {de}
}
@article{HelsperMoelterHaller1990,
  author    = {Helsper, Christoph and M{\"o}lter, W. and Haller, P.},
  title     = {Representative Dilution of Aerosols by a Factor of 10,000},
  series = {Journal of Aerosol Science. 21 (1990), H. Suppl. 1},
  journal   = {Journal of Aerosol Science. 21 (1990), H. Suppl. 1},
  isbn      = {0021-8502},
  pages     = {637 -- 640},
  year      = {1990},
  language  = {en}
}
@article{HelsperMoelterKaminski1990,
  author    = {Helsper, Christoph and M{\"o}lter, W. and Kaminski, S.},
  title     = {Automatisierter Test von Luftfiltermedien f{\"u}r Hochleistungsschwebstoffilter und Entstaubungsfilter / M{\"o}lter, W. ; Helsper, C. ; Kaminski, S.},
  series = {Staub, Reinhaltung der Luft. 50 (1990)},
  journal   = {Staub, Reinhaltung der Luft. 50 (1990)},
  isbn      = {0039-0771},
  pages     = {311 -- 317},
  year      = {1990},
  language  = {de}
}
@article{Hoettges1990,
  author    = {H{\"o}ttges, J{\"o}rg},
  title     = {Turbulence and Mixing Mechanics in Compound Open Channel Flow / Arnold, Uwe; H{\"o}ttges, J{\"o}rg; Rouv{\´e}, Gerhard},
  series = {On cutoff ratios of curved channels : paper presented at the 23rd Congress of the IAHR, Ottawa, Canada, August 21 - 25, 1989 / G. J. Klaassen; B. H. J.van Zanten},
  journal   = {On cutoff ratios of curved channels : paper presented at the 23rd Congress of the IAHR, Ottawa, Canada, August 21 - 25, 1989 / G. J. Klaassen; B. H. J.van Zanten},
  publisher = {Delft Hydraulics},
  address   = {Delft},
  year      = {1990},
  language  = {en}
}
@article{JacobsQuernheim1990,
  author    = {Jacobs, Stephan and Quernheim, Ulrich},
  title     = {ARQ Error Control for Multipoint Satellite Communications / Ulrich Quernheim, Stephan Jacobs},
  series = {Computer networking : proceedings of the IFIP TC 6 Conference on Computer Networking, COMNET '90, Budapest, Hungary, 8-10 May, 1990 / edited by L{\´a}szl{\´o} Csaba, Tibor Szentiv{\´a}nyi, Katie Tarnay},
  journal   = {Computer networking : proceedings of the IFIP TC 6 Conference on Computer Networking, COMNET '90, Budapest, Hungary, 8-10 May, 1990 / edited by L{\´a}szl{\´o} Csaba, Tibor Szentiv{\´a}nyi, Katie Tarnay},
  publisher = {Elsevier},
  address   = {New York, N.Y.},
  isbn      = {0444888721},
  pages     = {xi, 505 p : ill},
  year      = {1990},
  language  = {en}
}
@article{JacobsQuernheim1990,
  author    = {Jacobs, Stephan and Quernheim, Ulrich},
  title     = {Multicopy ARQ Error Control Techniques for Multipoint Satellite Links / Ulrich Quernheim, Stephan Jacobs},
  series = {Proceedings of the IFIP TC 6 International Conference on Information Network and Data Communication : Lillehammer, Norway, 26 - 29 March, 1990 / ed. by Dipak Khakhar ...},
  journal   = {Proceedings of the IFIP TC 6 International Conference on Information Network and Data Communication : Lillehammer, Norway, 26 - 29 March, 1990 / ed. by Dipak Khakhar ...},
  publisher = {North-Holland},
  address   = {Amsterdam [u.a.]},
  isbn      = {0-444-88696-6},
  pages     = {XI, 411 S. : Ill., graph. Darst.},
  year      = {1990},
  language  = {en}
}
@article{JacobsQuernheim1990,
  author    = {Jacobs, Stephan and Quernheim, Ulrich},
  title     = {Error Control Techniques for Digital Satellite Links},
  series = {C-band antennas for regional communication systems : 1st European Conference Satellite Communications, ECSC-1, M{\"u}nchen, 28.-30.11.89 / Wolf, H. u.a. [Mitarb.]. Information und Dokumentation, Messerschmitt-B{\"o}lkow-Blohm GmbH (MBB), M{\"u}nchen},
  journal   = {C-band antennas for regional communication systems : 1st European Conference Satellite Communications, ECSC-1, M{\"u}nchen, 28.-30.11.89 / Wolf, H. u.a. [Mitarb.]. Information und Dokumentation, Messerschmitt-B{\"o}lkow-Blohm GmbH (MBB), M{\"u}nchen},
  publisher = {OTN-Berichtsstelle, Technisch-wissenschaftliche Information, Messerschmitt-B{\"o}lkow-Blohm GmbH},
  address   = {M{\"u}nchen},
  year      = {1990},
  language  = {en}
}
@misc{JerominOrtFickert1990,
  author    = {Jeromin, G{\"u}nter Erich and Ort, Winfried and Fickert, Werner},
  title     = {Verfahren zur Chlorierung von Alkylseitenketten stickstoffhaltiger Heterocyclen : Europ{\"a}ische Patentschrift EP0204352B1 ; Ver{\"o}ffentlichungstag im Patentblatt: 23.05.1990 / Anmelder: R{\"u}tgerswerke AG, 6000 Frankfurt},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {5 S.},
  year      = {1990},
  language  = {de}
}
@article{JerominWeise1990,
  author    = {Jeromin, G{\"u}nter Erich and Weise, Sven},
  title     = {Enzymatische Acetylierung von (±)-1-Phthalimido-2-propanol},
  series = {Liebigs Annalen der Chemie (1990)},
  journal   = {Liebigs Annalen der Chemie (1990)},
  isbn      = {0947-3440},
  pages     = {1045 -- 1046},
  year      = {1990},
  language  = {de}
}
@article{Kern1990,
  author    = {Kern, Alexander},
  title     = {The heating of metal sheets caused by direct lightning strikes-model and measurement},
  series = {20th ICPL / International Conference on Lightning Protection, Congress-Center Casino Interlaken, Switzerland, September 24-28, 1990 = Internationale Blitzschutzkonferenz, Congress-Center Casino Interlaken, Schweiz, 24.-28. September 1990},
  journal   = {20th ICPL / International Conference on Lightning Protection, Congress-Center Casino Interlaken, Switzerland, September 24-28, 1990 = Internationale Blitzschutzkonferenz, Congress-Center Casino Interlaken, Schweiz, 24.-28. September 1990},
  publisher = {Schweizerischer Elektrotechnischer Verein},
  address   = {[Z{\"u}rich]},
  pages     = {[522] S. (getr. Z{\"a}hl.) : Ill.},
  year      = {1990},
  language  = {en}
}
@book{Kern1990,
  author    = {Kern, Alexander},
  title     = {Theoretische und experimentelle Untersuchung der Erw{\"a}rmung von Metallblechen bei Blitzeinschlag},
  publisher = {Univ. der Bundeswehr},
  address   = {M{\"u}nchen},
  pages     = {219 S. : Ill., graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Kettern1990,
  author    = {Kettern, J{\"u}rgen},
  title     = {Untersuchungen zur biologisch-chemisch-physikalischen Behandlung von Deponiesickerw{\"a}ssern},
  publisher = {Ges. zur F{\"o}rderung d. Siedlungswasserwirtschaft an d. RWTH},
  address   = {Aachen},
  pages     = {XIV, 184, [71] S : Ill. u. graph. Darst + 73 Ill.},
  year      = {1990},
  language  = {de}
}
@article{KotterGrazykGeissleetal.1990,
  author    = {Kotter, Michael and Grazyk, J. and Geißle, W. and Roth, A.},
  title     = {Fließeigenschaften von Keramiken f{\"u}r die Herstellung von Katalysatortr{\"a}gern / J. Grazyk ; W. Gleißle ; A. Roth ; M. Kotter},
  series = {Erd{\"o}l \& Kohle, Erdgas, Petrochemie : EKEP. 43 (1990), H. 1},
  journal   = {Erd{\"o}l \& Kohle, Erdgas, Petrochemie : EKEP. 43 (1990), H. 1},
  isbn      = {0014-0058},
  pages     = {27 -- 30},
  year      = {1990},
  language  = {de}
}
@article{KotterLiRiekert1990,
  author    = {Kotter, Michael and Li, D. X. and Riekert, Lothar},
  title     = {Partial oxidation of o-xylene to phthalic anhydride in a structured fixed bed containing a sequence of catalysts},
  series = {New developments in selective oxidation : proceedings of an international symposium ; Rimini, Italy, Sept. 18 - 22, 1989 / eds.: G. Centi ... - (Studies in surface science and catalysis ; 55)},
  journal   = {New developments in selective oxidation : proceedings of an international symposium ; Rimini, Italy, Sept. 18 - 22, 1989 / eds.: G. Centi ... - (Studies in surface science and catalysis ; 55)},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {0-444-88694-X},
  pages     = {267 -- 274},
  year      = {1990},
  language  = {en}
}
@article{KotterXingLi1990,
  author    = {Kotter, Michael and Xing Li, Dong},
  title     = {Partielle Oxidation von o-Xylol zu Phthals{\"a}reanhydrid an V/Ti-Schalenkatalysatoren : [Synopsis 1898]},
  series = {Chemie - Ingenieur - Technik. 62 (1990), H. 11},
  journal   = {Chemie - Ingenieur - Technik. 62 (1990), H. 11},
  isbn      = {0009-286X},
  pages     = {950 -- 951},
  year      = {1990},
  language  = {de}
}
@article{KrauseNeubertPietsch1990,
  author    = {Krause, Gregor and Neubert, R. and Pietsch, R.},
  title     = {Investigations of Electrical Aging in Polymers under High AC-Field Strength},
  series = {1990 annual report : October 28 - October 31, 1990 / sponsored by the IEEE Dielectrics and Electrical Insulation Society},
  journal   = {1990 annual report : October 28 - October 31, 1990 / sponsored by the IEEE Dielectrics and Electrical Insulation Society},
  publisher = {IEEE Service Center},
  address   = {Piscataway, N.J},
  pages     = {716 S : Ill., graph. Darst.},
  year      = {1990},
  language  = {en}
}
@article{KaemperPappasHopster1990,
  author    = {K{\"a}mper, Klaus-Peter and Pappas, D. P. and Hopster, H.},
  title     = {Reversible transition between perpendicular and in-plane magnetization in ultrathin films. Pappas, D. P.; K{\"a}mper, K.-P.; Hopster, H.},
  series = {Physical Review Letters. 64 (1990), H. 26},
  journal   = {Physical Review Letters. 64 (1990), H. 26},
  isbn      = {1079-7114},
  pages     = {3179 -- 3182},
  year      = {1990},
  language  = {en}
}
@article{KaemperSchmittGuentherodt1990,
  author    = {K{\"a}mper, Klaus-Peter and Schmitt, W. and G{\"u}ntherodt, G.},
  title     = {Temperature and wave-vector dependence of the spin-split band structure of Ni(111) along the \&\#915;-L line},
  series = {Physical Review B. 42 (1990), H. 16},
  journal   = {Physical Review B. 42 (1990), H. 16},
  isbn      = {1095-3795},
  pages     = {10696 -- 10705},
  year      = {1990},
  language  = {en}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 3: HT-Superlegierungen},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-863-2},
  pages     = {191 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 4 : Sonderwerkstoffe. -2. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-864-6},
  pages     = {148 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 1 : Grundlagen. -2. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-861-6},
  pages     = {183 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 2 : Leichtmetalle und St{\"a}hle},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-862-4},
  pages     = {194 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@article{Lassonczyk1990,
  author    = {Lassonczyk, Beate},
  title     = {Characteristics of a fossil soil developed on the basement complex in the northeast Somalia},
  series = {Berliner geowissenschaftliche Abhandlungen / Reihe A, Geologie und Pal{\"a}ontologie / hrsg. von d. Geowissenschaftlichen Instituten der Freien u. d. Technischen Universit{\"a}t Berlin. 120 A (1990)},
  journal   = {Berliner geowissenschaftliche Abhandlungen / Reihe A, Geologie und Pal{\"a}ontologie / hrsg. von d. Geowissenschaftlichen Instituten der Freien u. d. Technischen Universit{\"a}t Berlin. 120 A (1990)},
  isbn      = {0172-8784},
  pages     = {713 -- 718},
  year      = {1990},
  language  = {en}
}
@article{Lassonczyk1990,
  author    = {Lassonczyk, Beate},
  title     = {Untersuchung einer Chronosequenz in Nord-Somalia zur Kennzeichnung der Landschaftsgeschichte},
  series = {14th International Congress of Soil Science : transactions. vol. 5. Kyoto, Japan, August 12 - 18, 1990 = 14{\`e}me Congr{\`e}s International de la Science du Sol = 14. Internationaler Bodenkundlicher Kongreß / International Society of Soil Science},
  journal   = {14th International Congress of Soil Science : transactions. vol. 5. Kyoto, Japan, August 12 - 18, 1990 = 14{\`e}me Congr{\`e}s International de la Science du Sol = 14. Internationaler Bodenkundlicher Kongreß / International Society of Soil Science},
  pages     = {370 -- 371},
  year      = {1990},
  language  = {de}
}
@article{LassonczykAlailyHuthetal.1990,
  author    = {Lassonczyk, Beate and Alaily, F. and Huth, A. and Gensior, A.},
  title     = {Genesis of soils in the arid part of northeast Somalia / F. Alaily, B. Lassonczyk, A.Huth and A. Gensior},
  series = {Berliner geowissenschaftliche Abhandlungen / Reihe A, Geologie und Pal{\"a}ontologie / hrsg. von d. Geowissenschaftlichen Instituten der Freien u. d. Technischen Universit{\"a}t Berlin. 120 A (1990)},
  journal   = {Berliner geowissenschaftliche Abhandlungen / Reihe A, Geologie und Pal{\"a}ontologie / hrsg. von d. Geowissenschaftlichen Instituten der Freien u. d. Technischen Universit{\"a}t Berlin. 120 A (1990)},
  isbn      = {0172-8784},
  pages     = {695 -- 711},
  year      = {1990},
  language  = {en}
}
@article{LassonczykVoigtGabrieletal.1990,
  author    = {Lassonczyk, Beate and Voigt, B. and Gabriel, B. and Ghod, Mumin M.},
  title     = {Quaternary events at the Horn of Africa / Voigt, B., B. Gabriel, B. Lassonczyk and Mumin M. Ghod},
  series = {Berliner geowissenschaftliche Abhandlungen / Reihe A, Geologie und Pal{\"a}ontologie / hrsg. von d. Geowissenschaftlichen Instituten der Freien u. d. Technischen Universit{\"a}t Berlin. 120 A (1990)},
  journal   = {Berliner geowissenschaftliche Abhandlungen / Reihe A, Geologie und Pal{\"a}ontologie / hrsg. von d. Geowissenschaftlichen Instituten der Freien u. d. Technischen Universit{\"a}t Berlin. 120 A (1990)},
  isbn      = {0172-8784},
  pages     = {679 -- 694},
  year      = {1990},
  language  = {en}
}
@article{LauthChristmannSchwarz1990,
  author    = {Lauth, Jakob and Christmann, K. and Schwarz, E.},
  title     = {Adsorption geometry of H on RU(1010) image as determined by LEED and HREELS / Christmann, K. ; Lauth, G. ; Schwarz, E.},
  series = {Vacuum. 41 (1990), H. 1-3},
  journal   = {Vacuum. 41 (1990), H. 1-3},
  isbn      = {0042-207X},
  pages     = {293 -- 296},
  year      = {1990},
  language  = {en}
}
@book{Ley1990,
  author    = {Ley, Wilfried},
  title     = {Seilgefesselte Raumflugk{\"o}rper, -Tethertechnik- : Gemeinschaftsveranstaltung der FH Aachen und der DGLR ... / 3. Raumfahrt-Kolloquium an der Fachhochschule Aachen, 13. Dezember 1990. [Wiss. Programmleitung: W. Ley, W. Hallmann]},
  publisher = {DGLR},
  address   = {Bonn},
  isbn      = {3-922010-59-8},
  pages     = {Getr. Z{\"a}hl. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@article{Lindemann1990,
  author    = {Lindemann, Markus},
  title     = {Auf Europa programmiert},
  series = {Welthandel : das internationale Wirtschaftsmagazin. Jg. 10 (1990), Nr. 6},
  journal   = {Welthandel : das internationale Wirtschaftsmagazin. Jg. 10 (1990), Nr. 6},
  issn      = {0720-3683},
  pages     = {84},
  year      = {1990},
  language  = {de}
}
@misc{MangMaier1990,
  author    = {Mang, Thomas and Maier, Josef},
  title     = {Verfahren zur Herstellung einer Festphasenmatrix, an die Haptene kovalent gebunden sind},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  year      = {1990},
  language  = {de}
}
@book{MangMaier1990,
  author    = {Mang, Thomas and Maier, Josef},
  title     = {Verfahren zur Herstellung einer Festphasenmatrix, an die Haptene kovalent gebunden sind},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen},
  year      = {1990},
  language  = {de}
}
@article{Mayer1990,
  author    = {Mayer, Claudia},
  title     = {Das Ich ist eine Illusion},
  series = {Deutsches Allgemeines Sonntagsblatt (1990)},
  journal   = {Deutsches Allgemeines Sonntagsblatt (1990)},
  pages     = {16 -- 16},
  year      = {1990},
  language  = {de}
}
@article{Mayer1990,
  author    = {Mayer, Claudia},
  title     = {Bali. Bl{\"u}teninsel im Indischen Ozean. Reisebericht},
  series = {Fliegende Bl{\"a}tter / Condor (1990)},
  journal   = {Fliegende Bl{\"a}tter / Condor (1990)},
  pages     = {61 -- 64},
  year      = {1990},
  language  = {de}
}
@article{Meliss1990,
  author    = {Meliß, Michael},
  title     = {Regenerative Energiequellen},
  series = {Brennstoff, W{\"a}rme, Kraft : BWK ; das Energie-Fachmagazin. Bd. 42 (1990), H. 4},
  journal   = {Brennstoff, W{\"a}rme, Kraft : BWK ; das Energie-Fachmagazin. Bd. 42 (1990), H. 4},
  issn      = {0006-9612 (Print) ; 1436-4883 (E-Journal)},
  pages     = {173 -- 179},
  year      = {1990},
  language  = {de}
}
@incollection{Meliss1990,
  author    = {Meliß, Michael},
  title     = {Trends und Schwerpunkte bei der Entwicklung regenerativer Energietr{\"a}ger},
  series = {Technische Perspektiven und gesellschaftliche Entwicklungen : Trends und Schwerpunkte der Forschung in der Bundesrepublik Deutschland / Ulrich Widmaier; Thomas K{\"o}nig (Hrsg.). - (Studien zur gesellschaftlichen Entwicklung ; 1)},
  booktitle = {Technische Perspektiven und gesellschaftliche Entwicklungen : Trends und Schwerpunkte der Forschung in der Bundesrepublik Deutschland / Ulrich Widmaier; Thomas K{\"o}nig (Hrsg.). - (Studien zur gesellschaftlichen Entwicklung ; 1)},
  publisher = {Nomos-Verl.-Ges.},
  address   = {Baden-Baden},
  isbn      = {3-7890-1891-0},
  pages     = {279 -- 306},
  year      = {1990},
  language  = {de}
}
@article{MerschenzQuackMootz1990,
  author    = {Merschenz-Quack, Angelika and Mootz, D.},
  title     = {Structure of 5-sulfosalicylic acid pentahydrate},
  series = {Acta crystallographica / Section C, Crystal structure communications. C 46 (1990), H. 8},
  journal   = {Acta crystallographica / Section C, Crystal structure communications. C 46 (1990), H. 8},
  isbn      = {0108-2701},
  pages     = {1478 -- 1480},
  year      = {1990},
  language  = {en}
}
@article{Mischke1990,
  author    = {Mischke, Winfried},
  title     = {Unzust{\"a}ndigkeit der Berufungskammer bei Klageerweiterung},
  series = {Neue juristische Wochenschrift / NJW-Rechtsprechungs-Report Zivilrecht. 5 (1990), H. 11},
  journal   = {Neue juristische Wochenschrift / NJW-Rechtsprechungs-Report Zivilrecht. 5 (1990), H. 11},
  isbn      = {0179-4043},
  pages     = {704},
  year      = {1990},
  language  = {de}
}
@book{MuellerOestreichKruse1990,
  author    = {M{\"u}ller-Oestreich, Karen and Kruse, Christina},
  title     = {Verfehlte Ziele, die Ausgabenentwicklung in den USA und in der Bundesrepublik Deutschland in den 80er Jahren / Christina Kruse und Karen M{\"u}ller-Oestreich},
  address   = {Freiburg i. Br.},
  pages     = {35 Bl. 13 Tab.},
  year      = {1990},
  language  = {de}
}
@misc{NonhoffWahle1990,
  author    = {Nonhoff, Gottfried and Wahle, Michael},
  title     = {Anordnung zur D{\"a}mpfung von Schwingungen an Bauwerken und Bauteilen : Offenlegungsschrift / Europ{\"a}ische Patentschrift},
  publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen / Den Hague},
  pages     = {7 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@article{PawelkeSchmittMeissen1990,
  author    = {Pawelke, Siegfried and Schmitt, W. and Meissen, Th.},
  title     = {Aachen 3D finger. 3D digitizer for application in dentistry / Schmitt, W. ; Pawelke, S. ; Meissen, Th.},
  series = {Biomedizinische Technik. 35 (1990), H. 4},
  journal   = {Biomedizinische Technik. 35 (1990), H. 4},
  isbn      = {0013-5585},
  pages     = {69 -- 71},
  year      = {1990},
  language  = {en}
}
@article{Pietsch1990,
  author    = {Pietsch, Wolfram},
  title     = {Flexible Planung und Kontrolle von Prototyping-Projekten},
  series = {Operations research proceedings 1989 : papers of the 18. annual meeting / DGOR. Hrsg. von K.-P. Kistner ....},
  journal   = {Operations research proceedings 1989 : papers of the 18. annual meeting / DGOR. Hrsg. von K.-P. Kistner ....},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {3540524894},
  pages     = {382 -- 387},
  year      = {1990},
  language  = {de}
}
@incollection{Pietsch1990,
  author    = {Pietsch, Wolfram},
  title     = {Flexibilisierung des betrieblichen Software-Projektmanagements},
  series = {Beitr{\"a}ge zum Projektmanagement-Forum 90 : vom 19. - 21. September 1990 in Aachen},
  booktitle = {Beitr{\"a}ge zum Projektmanagement-Forum 90 : vom 19. - 21. September 1990 in Aachen},
  publisher = {Gesellschaft f{\"u}r Projektmanagement INTERNET Deutschland e.V.},
  address   = {M{\"u}nchen},
  organization    = {Projektmanagement-Forum <1990, Aachen>},
  isbn      = {3-924841-10-1},
  pages     = {345 -- 355},
  year      = {1990},
  language  = {de}
}
@article{PietschBolteKurbeletal.1990,
  author    = {Pietsch, Wolfram and Bolte, Christine and Kurbel, Karl and Moazzami, Mahmoud},
  title     = {Ein Schnappschuss der Expertensystemszene in der Bundesrepublik Deutschland / Bolte, Christine; Kurbel, Karl; Moazzami, Mahmoud; Pietsch, Wolfram},
  series = {Wirtschaftsinformatik. 32 (1990), H. 1},
  journal   = {Wirtschaftsinformatik. 32 (1990), H. 1},
  isbn      = {0937-6429},
  pages     = {79 -- 86},
  year      = {1990},
  language  = {de}
}
@article{PietschKurbel1990,
  author    = {Pietsch, Wolfram and Kurbel, Karl},
  title     = {A Cooperative Work Environment for Evolutionary Software Development / Kurbel, K., Pietsch, W.},
  series = {Multi-user interfaces and applications : proceedings of the IFIP WG 8.4 Conference on Multi-User Interfaces and Applications, Heraklion, Crete, Greece, 24 - 26 September, 1990 / ed. by Simon Gibbs ...},
  journal   = {Multi-user interfaces and applications : proceedings of the IFIP WG 8.4 Conference on Multi-User Interfaces and Applications, Heraklion, Crete, Greece, 24 - 26 September, 1990 / ed. by Simon Gibbs ...},
  publisher = {North-Holland Publ.},
  address   = {Amsterdam [u.a.]},
  isbn      = {0-444-88760-1},
  pages     = {115 -- 127},
  year      = {1990},
  language  = {en}
}
@article{PietschSiedentopf1990,
  author    = {Pietsch, Wolfram and Siedentopf, J.},
  title     = {Wissensbasierte Programmierung in konventionellen Programmiersprachen - Entwicklung einer flexiblen Schnittstelle zur Expertensystementwicklung in Ada / Pietsch, W., Siedentopf, J.},
  series = {Wissensbasierte Systeme in der Betriebswirtschaft : Grundlagen, Entwicklung, Anwendungen / Hrsg. Dieter Ehrenberg ...},
  journal   = {Wissensbasierte Systeme in der Betriebswirtschaft : Grundlagen, Entwicklung, Anwendungen / Hrsg. Dieter Ehrenberg ...},
  publisher = {Schmidt},
  address   = {Berlin},
  isbn      = {3-503-03144-8},
  pages     = {233 -- 250},
  year      = {1990},
  language  = {de}
}