@article{KotterBeckerRiekert1989,
  author    = {Kotter, Michael and Becker, Dieter and Riekert, Lothar},
  title     = {Zur Selektivit{\"a}t der partiellen Oxidation von Propen an Schalenkatalysatoren / Dieter Becker ; Michael Kotter ; Lothar Riekert},
  series = {Chemie - Ingenieur - Technik. 61 (1989), H. 9},
  journal   = {Chemie - Ingenieur - Technik. 61 (1989), H. 9},
  isbn      = {0009-286X},
  pages     = {748 -- 749},
  year      = {1989},
  language  = {de}
}
@article{StaatBallmann1989,
  author    = {Staat, Manfred and Ballmann, J.},
  title     = {Zur Problematik tensorieller Verallgemeinerungen einachsiger nichtlinearer Materialgesetze},
  series = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 69 (1989), H. 2},
  journal   = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 69 (1989), H. 2},
  isbn      = {0946-8463},
  doi       = {10.1515/9783112553169-006},
  pages     = {73 -- 81},
  year      = {1989},
  language  = {de}
}
@article{Schaefer1989,
  author    = {Sch{\"a}fer, Horst},
  title     = {Zur Inhomogenit{\"a}t des inneren Feldes und der Flußdichte von kornorientierten Elektroblechen aus Silizium-Eisen bei Fehlorientierungen in der Blechebene},
  series = {Electrical Engineering (Archiv fur Elektrotechnik). 72 (1989), H. 1},
  journal   = {Electrical Engineering (Archiv fur Elektrotechnik). 72 (1989), H. 1},
  isbn      = {0948-7921},
  pages     = {51 -- 57},
  year      = {1989},
  language  = {de}
}
@article{SchaeferLampey1989,
  author    = {Sch{\"a}fer, Horst and Lampey, H.},
  title     = {Zum Einfluß der Streufeldkopplung auf die magnetischen Eigenschaften und den Wirkungsgrad handels{\"u}blicher Transformatorkerne aus kornorientierten Silizium-Eisen Elektroblechen},
  series = {Electrical Engineering (Archiv fur Elektrotechnik). 72 (1989), H. 6},
  journal   = {Electrical Engineering (Archiv fur Elektrotechnik). 72 (1989), H. 6},
  isbn      = {0948-7921},
  pages     = {395 -- 405},
  year      = {1989},
  language  = {de}
}
@article{GrundmannKramerGerhardt1989,
  author    = {Grundmann, Reinhard and Kramer, Carl and Gerhardt, Hans Joachim},
  title     = {Zonenabsaugung und Bel{\"u}ftung f{\"u}r eine Produktionshalle mit zeitweilig auftretender hoher Staubentwicklung},
  series = {DKV-Tagungsbericht, Deutscher K{\"a}lte- und Klimatechnischer Verein. 4 (1989)},
  journal   = {DKV-Tagungsbericht, Deutscher K{\"a}lte- und Klimatechnischer Verein. 4 (1989)},
  isbn      = {0172-8849},
  pages     = {981 -- 998},
  year      = {1989},
  language  = {de}
}
@article{Blome1989,
  author    = {Blome, Hans-Joachim},
  title     = {Wie funktionieren die aktiven Kerne der Galaxien?},
  series = {Naturwissenschaften. 76 (1989), H. 7},
  journal   = {Naturwissenschaften. 76 (1989), H. 7},
  isbn      = {0028-1042},
  pages     = {310 -- 317},
  year      = {1989},
  language  = {de}
}
@article{Heinrichs1989,
  author    = {Heinrichs, Horst},
  title     = {Verbindung von CAD und CAE mittels der systemneutralen CAD I Schnittstelle},
  pages     = {391 -- 408},
  year      = {1989},
  language  = {de}
}
@article{Kern1989,
  author    = {Kern, Alexander},
  title     = {Time dependent temperature distribution in metal sheets caused by direct lightning strikes},
  series = {Proceedings / Sixth International Symposium on High Voltage Engineering : 28. August - 1. September, 1989, Westin Canal Place Hotel, New Orleans, Louisiana, USA},
  journal   = {Proceedings / Sixth International Symposium on High Voltage Engineering : 28. August - 1. September, 1989, Westin Canal Place Hotel, New Orleans, Louisiana, USA},
  publisher = {Mississippi State University},
  address   = {Mississippi State, Miss.},
  year      = {1989},
  language  = {en}
}
@article{KaemperSchmittWesneretal.1989,
  author    = {K{\"a}mper, Klaus-Peter and Schmitt, W. and Wesner, D. A. and G{\"u}ntherodt, G.},
  title     = {Thickness dependence of the spin- and angle-resolved photoemission of ultrathin, epitaxial Ni(111)/W(110) layers},
  series = {Applied Physics A: Materials Science and Processing. 49 (1989), H. 6},
  journal   = {Applied Physics A: Materials Science and Processing. 49 (1989), H. 6},
  isbn      = {1432-0630},
  pages     = {573 -- 578},
  year      = {1989},
  language  = {en}
}
@article{SchererHessbergerGaeggeleretal.1989,
  author    = {Scherer, Ulrich W. and Heßberger, F. P. and G{\"a}ggeler, H. W. and Armbruster, P.},
  title     = {The New Nuclide 225U / F.P. Heßberger, H. G{\"a}ggeler, P. Armbruster, W. Br{\"u}chle, H. Folger, S. Hofmann, D. Jost, J.V. Kratz, M.E. Leino, G. M{\"u}nzenberg, V. Ninov, M. Sch{\"a}del, U.W. Scherer, K. S{\"u}mmerer, A. T{\"u}rler, D. Ackerman},
  series = {Zeitschrift f{\"u}r Physik A Hadrons and Nuclei. 333 (1989), H. 1},
  journal   = {Zeitschrift f{\"u}r Physik A Hadrons and Nuclei. 333 (1989), H. 1},
  isbn      = {0939-7922},
  pages     = {111 -- 112},
  year      = {1989},
  language  = {en}
}
@article{KernLangWiesingeretal.1989,
  author    = {Kern, Alexander and Lang, U. and Wiesinger, J. and Zischank, Wolfgang J.},
  title     = {The longitudinal voltage of cable tubes with a screening mesh caused by partial lightning currents},
  series = {Proceedings / Sixth International Symposium on High Voltage Engineering : 28. August - 1. September, 1989, Westin Canal Place Hotel, New Orleans, Louisiana, USA},
  journal   = {Proceedings / Sixth International Symposium on High Voltage Engineering : 28. August - 1. September, 1989, Westin Canal Place Hotel, New Orleans, Louisiana, USA},
  publisher = {Mississippi State University},
  address   = {Mississippi State, Miss.},
  year      = {1989},
  language  = {en}
}
@article{LauthSolomunHirschwaldetal.1989,
  author    = {Lauth, Jakob and Solomun, T. and Hirschwald, W. and Christmann, K.},
  title     = {The interaction of carbon monoxide with a ruthenium(1010) surface},
  series = {Surface Science. 210 (1989), H. 1-2},
  journal   = {Surface Science. 210 (1989), H. 1-2},
  isbn      = {0039-6028},
  pages     = {201 -- 224},
  year      = {1989},
  language  = {en}
}
@article{LauthSolomunHirschwaldetal.1989,
  author    = {Lauth, Jakob and Solomun, T. and Hirschwald, W. and Christmann, K.},
  title     = {The interaction of carbon monoxide with a ruthenium(1010) surface},
  series = {Surface Science Letters. 210 (1989), H. 1-2},
  journal   = {Surface Science Letters. 210 (1989), H. 1-2},
  isbn      = {0167-2584},
  pages     = {A74 -- A75},
  year      = {1989},
  language  = {en}
}
@article{FoersterLueth1989,
  author    = {F{\"o}rster, Arnold and L{\"u}th, H.},
  title     = {Surface reactions of trimethylgallium and trimethylarsenic on silicon surfaces},
  series = {Journal of Vacuum Science \& Technology B: Microelectronics and Nanometer Structures. 7 (1989), H. 4},
  journal   = {Journal of Vacuum Science \& Technology B: Microelectronics and Nanometer Structures. 7 (1989), H. 4},
  isbn      = {1071-1023},
  pages     = {720 -- 724},
  year      = {1989},
  language  = {en}
}
@article{Hagemann1989,
  author    = {Hagemann, Hans-J{\"u}rgen},
  title     = {St{\"o}rstellengleichgewichte in eisendotierten Titanaten. Hagemann, H. J.},
  series = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 4 (1989)},
  journal   = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 4 (1989)},
  pages     = {170 -- 172},
  year      = {1989},
  language  = {de}
}
@article{KotterLintzRiekertetal.1989,
  author    = {Kotter, Michael and Lintz, Hans-G{\"u}nther and Riekert, Lothar and Trimm, D. L.},
  title     = {Structure and selectivity changes in vanadia-titania catalysts used to promote the reduction of nitric oxide with ammonia},
  series = {Applied catalysis. 52 (1989), H. 1},
  journal   = {Applied catalysis. 52 (1989), H. 1},
  isbn      = {0166-9834},
  pages     = {225 -- 235},
  year      = {1989},
  language  = {en}
}
@article{SchaeferLampeyMende1989,
  author    = {Sch{\"a}fer, Horst and Lampey, H. and Mende, H. H.},
  title     = {Stray-field profile of single M-shaped Si-Fe transformer sheets and the resulting interaction in a stack},
  series = {Physica Scripta. 39 (1989), H. 4},
  journal   = {Physica Scripta. 39 (1989), H. 4},
  isbn      = {0031-8949},
  pages     = {520 -- 522},
  year      = {1989},
  language  = {en}
}
@article{Alt1989,
  author    = {Alt, Helmut},
  title     = {Steuerreformgesetz 1990},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Bd. 88},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 1/2},
  issn      = {0013-5496},
  pages     = {78 -- 83},
  year      = {1989},
  language  = {de}
}
@article{Alt1989,
  author    = {Alt, Helmut},
  title     = {Steuerreformgesetz 1990},
  series = {Elektrizit{\"a}tswirtschaft},
  volume    = {Jg. 88},
  journal   = {Elektrizit{\"a}tswirtschaft},
  number    = {H. 2},
  issn      = {0947-0581 (E-Journal); 0340-7918 (Print)},
  pages     = {120 -- 121},
  year      = {1989},
  language  = {de}
}
@article{KrauseGoettlichMoelleretal.1989,
  author    = {Krause, Gregor and G{\"o}ttlich, S. and M{\"o}ller, K. and Meurer, D.},
  title     = {Space Charge Phenomena in Partially Crystalline Polymers: On-Line Measurement of Charge Carrier Motion under High AC-Field Strength / G. Krause, S. G{\"o}ttlich, K. M{\"o}ller, D. Meurer},
  series = {Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics : Trondheim, Norway ... 1989},
  journal   = {Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics : Trondheim, Norway ... 1989},
  publisher = {IEEE},
  address   = {Piscataway, N.J.},
  pages     = {IX, 607 S.},
  year      = {1989},
  language  = {en}
}
@article{KrauseMeurerKlee1989,
  author    = {Krause, Gregor and Meurer, D. and Klee, D.},
  title     = {Space charge formation related to the morphology of polymers},
  series = {IEEE Transaction on Electrical Insulation. Vol. 24 (1989), H. No. 3},
  journal   = {IEEE Transaction on Electrical Insulation. Vol. 24 (1989), H. No. 3},
  pages     = {215 -- 222},
  year      = {1989},
  language  = {en}
}
@article{Grap1989,
  author    = {Grap, Rolf Dietmar},
  title     = {Softwareergonomie bei der Arbeit mit Großrechnern},
  series = {pro Ort (1989)},
  journal   = {pro Ort (1989)},
  pages     = {31},
  year      = {1989},
  language  = {de}
}
@article{DiktaKurtzStute1989,
  author    = {Dikta, Gerhard and Kurtz, B. and Stute, W.},
  title     = {Sequential Fixed-Width Confidence Bands for Distribution Functions Under Random Censoring},
  series = {Metrika. 36 (1989)},
  journal   = {Metrika. 36 (1989)},
  isbn      = {0026-1335},
  pages     = {167 -- 176},
  year      = {1989},
  language  = {en}
}
@article{KrauseSchuppeSaureetal.1989,
  author    = {Krause, Gregor and Schuppe, W.D. and Saure, M. and Andress, H.},
  title     = {Sensitive Analytische und Physikalische Verfahren zum Nachweis von Ver{\"a}nderungen in Platten und Kabelisolierungen aus Polyolefinen / W.D. Schuppe, M. Saure, H. Andress, K. M{\"o}ller, D. Meurer, G. Krause},
  series = {AEG Technische Mitteilungen (1989)},
  journal   = {AEG Technische Mitteilungen (1989)},
  year      = {1989},
  language  = {de}
}
@article{SammFaissnerHeinrigsetal.1989,
  author    = {Samm, Doris and Faissner, H. and Heinrigs, W. and Preussger, A.},
  title     = {Search for the two-photon decay of a light penetrating particle from a 590 MeV proton beam dump / Faissner, H.; Heinrigs, W.; Preussger, A.; Reitz, J.; Samm, D. [u.a.]},
  series = {Zeitschrift f{\"u}r Physik, C Particles and Fields. 44 (1989), H. 4},
  journal   = {Zeitschrift f{\"u}r Physik, C Particles and Fields. 44 (1989), H. 4},
  pages     = {557 -- 566},
  year      = {1989},
  language  = {en}
}
@article{Benner1989,
  author    = {Benner, Joachim},
  title     = {Schwingungsbelastung von drehzahlgeregelten Antrieben mit Stromrichtermotoren},
  series = {Antriebstechnik : Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen ; Organ der Forschungsvereinigung Antriebstechnik e.V.},
  volume    = {28},
  journal   = {Antriebstechnik : Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen ; Organ der Forschungsvereinigung Antriebstechnik e.V.},
  number    = {12},
  publisher = {Vereinigte Fachverl.},
  address   = {Mainz},
  issn      = {0341-2652},
  pages     = {49 -- 54},
  year      = {1989},
  language  = {de}
}
@article{Biener1989,
  author    = {Biener, Ernst},
  title     = {Sanierung von Altlasten},
  series = {Umweltschutz '89},
  journal   = {Umweltschutz '89},
  publisher = {Plus-Verl.},
  address   = {Saarlouis},
  pages     = {36 -- 38},
  year      = {1989},
  language  = {de}
}
@article{Meliss1989,
  author    = {Meliß, Michael},
  title     = {Regenerative Energiequellen. Technischer Stand und Wirtschaftlichkeit},
  series = {Energiewirtschaftliche Tagesfragen. Jg. 39 (1989), H. 1/2},
  journal   = {Energiewirtschaftliche Tagesfragen. Jg. 39 (1989), H. 1/2},
  issn      = {0013-743X ; 0720-6240},
  pages     = {18 -- 25},
  year      = {1989},
  language  = {de}
}
@article{Meliss1989,
  author    = {Meliß, Michael},
  title     = {Regenerative Energiequellen},
  series = {Brennstoff, W{\"a}rme, Kraft : BWK ; das Energie-Fachmagazin. Bd. 41 (1989), H. 4},
  journal   = {Brennstoff, W{\"a}rme, Kraft : BWK ; das Energie-Fachmagazin. Bd. 41 (1989), H. 4},
  issn      = {0006-9612 (Print) ; 1436-4883 (E-Journal)},
  pages     = {146 -- 151},
  year      = {1989},
  language  = {de}
}
@article{Meliss1989,
  author    = {Meliß, Michael},
  title     = {Photovoltaik bietet gr{\"o}ßtes Potential. NRW-Forschungs- und Entwicklungsarbeiten bereits heute anerkennenswert},
  series = {Energie : das Magazin f{\"u}r Wirtschaft, Forschung, Technik, Umwelt. Bd. 41 (1989), H. 12},
  journal   = {Energie : das Magazin f{\"u}r Wirtschaft, Forschung, Technik, Umwelt. Bd. 41 (1989), H. 12},
  issn      = {0013-7359},
  pages     = {32 -- 41},
  year      = {1989},
  language  = {de}
}
@article{LaackRefisch1989,
  author    = {Laack, Walter van and Refisch, A.},
  title     = {Neuralgic amyotrophy of the lumbar area. Case Report / Refisch, A. ; Laack, W. van},
  series = {Archives of Orthopaedic and Trauma Surgery. 108 (1989), H. 5},
  journal   = {Archives of Orthopaedic and Trauma Surgery. 108 (1989), H. 5},
  isbn      = {0936-8051},
  pages     = {329 -- 332},
  year      = {1989},
  language  = {en}
}
@article{SaffeLodewiksHaasetal.1989,
  author    = {Saffe, P. and Lodewiks, J. and Haas, H.-J. and Feigel, H.-J. and Ulrich, H. and Mauer, J. and Ortwig, H. and Dahmann, Peter and Rotth{\"a}user, S. and Tao, J. and Ohlischl{\"a}ger, O. and Scholz, D. and Bergmann, M. and Anders, P.},
  title     = {Neues von ASB Antreiben - Steuern - Bewegen},
  series = {{\"O}lhydraulik und Pneumatik. Vol. 33 (1989), H. 7},
  journal   = {{\"O}lhydraulik und Pneumatik. Vol. 33 (1989), H. 7},
  issn      = {0341-2660},
  pages     = {550 -- 572},
  year      = {1989},
  language  = {de}
}
@article{Schaefer1989,
  author    = {Sch{\"a}fer, Horst},
  title     = {Modellrechnungen und Streufeldmessung: Eine M{\"o}glichkeit zur zerst{\"o}rungsfreien Kristallstruktur-Analyse von kornorientiertem Elektroblech aus Silizium-Eisen},
  series = {Elektrotechnik und Informationstechnik : e \& i. 106 (1989), H. 2},
  journal   = {Elektrotechnik und Informationstechnik : e \& i. 106 (1989), H. 2},
  isbn      = {0932-383X},
  pages     = {67 -- 71},
  year      = {1989},
  language  = {de}
}
@article{SchaeferBoettcher1989,
  author    = {Sch{\"a}fer, Horst and B{\"o}ttcher, A.},
  title     = {Mapping of magnetic domain structures inside of ferromagnetic materials by X-ray topography},
  series = {Physica Status Solidi (A). 113 (1989)},
  journal   = {Physica Status Solidi (A). 113 (1989)},
  isbn      = {0031-8965},
  pages     = {551},
  year      = {1989},
  language  = {en}
}
@article{Pietsch1989,
  author    = {Pietsch, Wolfram},
  title     = {Konzepte und Instrumente f{\"u}r Organisation und Management evolution{\"a}rer Softwareentwicklungsprojekte},
  series = {Computergest{\"u}tzter Arbeitsplatz : M{\"u}nchen, 18. - 20. Oktober 1989 ; proceedings / M. Paul (Hrsg.) Bd. 2},
  journal   = {Computergest{\"u}tzter Arbeitsplatz : M{\"u}nchen, 18. - 20. Oktober 1989 ; proceedings / M. Paul (Hrsg.) Bd. 2},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {3-540-51822-3},
  pages     = {221 -- 231},
  year      = {1989},
  language  = {de}
}
@article{Lohse1989,
  author    = {Lohse, Wolfram},
  title     = {Kippnachweise nach DIN 4114 und Entwurf DIN 18800 Teil 2 - ein Hinweis f{\"u}r die Praxis},
  series = {Schweissen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren / Hrsg.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V.. 41 (1989), H. 9},
  journal   = {Schweissen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren / Hrsg.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V.. 41 (1989), H. 9},
  isbn      = {0036-7184},
  pages     = {459 -- 462},
  year      = {1989},
  language  = {de}
}
@article{HagemannGeittnerLeers1989,
  author    = {Hagemann, Hans-J{\"u}rgen and Geittner, P. and Leers, D.},
  title     = {Intrinsic scattering and absorption losses of Ge- and F-doped optical fibres prepared by PCVD. Geittner, P.; Hagemann, H. J. ; Leers, D.},
  series = {Electronics letters : an intern. publication / The Institution of Electrical Engineers. 25 (1989), H. 7},
  journal   = {Electronics letters : an intern. publication / The Institution of Electrical Engineers. 25 (1989), H. 7},
  isbn      = {0013-5194},
  pages     = {436 -- 437},
  year      = {1989},
  language  = {en}
}
@article{SchaeferMende1989,
  author    = {Sch{\"a}fer, Horst and Mende, H. H.},
  title     = {Interaction between laminated g.o.3\% SiFe sheets due to gap-stray fields and edge peaks},
  series = {Physica Scripta. 39 (1989), H. 3},
  journal   = {Physica Scripta. 39 (1989), H. 3},
  isbn      = {0031-8949},
  pages     = {397 -- 400},
  year      = {1989},
  language  = {en}
}
@article{HillenRuppSchiebeletal.1989,
  author    = {Hillen, Walter and Rupp, S. and Schiebel, U. and Zaengel, Thomas T.},
  title     = {Imaging performance of a selenium-based detector for high-resolution radiography},
  series = {Medical Imaging III: Image Formation},
  journal   = {Medical Imaging III: Image Formation},
  isbn      = {0-8194-0125-0},
  pages     = {296},
  year      = {1989},
  language  = {en}
}
@article{Gebhardt1989,
  author    = {Gebhardt, Andreas},
  title     = {H{\"a}rten von Kurbelwellen},
  pages     = {1 -- 14},
  year      = {1989},
  language  = {de}
}
@article{Bullerschen1989,
  author    = {Bullerschen, Klaus-Gerd},
  title     = {Hochtemperaturtechnik. Interne Arbeitssitzung des GVC-Fachausschusses 'Hochtemperaturtechnik'},
  series = {Chemie Ingenieur Technik. 61 (1989), H. 6},
  journal   = {Chemie Ingenieur Technik. 61 (1989), H. 6},
  isbn      = {0009-286X},
  pages     = {510 -- 512},
  year      = {1989},
  language  = {de}
}
@article{Bruessermann1989,
  author    = {Br{\"u}ssermann, Klaus},
  title     = {H3 and C14 air monitoring according to KTA 1503.1},
  series = {2. Karlsruhe international conference on analytical chemistry in nuclear technology, Karlsruhe (Germany), 5-9 Jun 1989},
  journal   = {2. Karlsruhe international conference on analytical chemistry in nuclear technology, Karlsruhe (Germany), 5-9 Jun 1989},
  pages     = {223},
  year      = {1989},
  language  = {en}
}
@article{KotterHammonRiekert1989,
  author    = {Kotter, Michael and Hammon, Ulrich and Riekert, Lothar},
  title     = {Gewinnung niedriger Olefine aus Methanol bei partiellem Umsatz mit R{\"u}ckf{\"u}hrung / U. Hammon ; M. Kotter ; L. Riekert},
  series = {Chemie - Ingenieur - Technik. 61 (1989), H. 2},
  journal   = {Chemie - Ingenieur - Technik. 61 (1989), H. 2},
  isbn      = {0009-286X},
  pages     = {151 -- 152},
  year      = {1989},
  language  = {de}
}
@article{Lassonczyk1989,
  author    = {Lassonczyk, Beate},
  title     = {Fossile Bodenbildung in Nord-Somalia},
  series = {Mitteilungen der Deutschen Bodenkundlichen Gesellschaft. 59 (1989), H. 2},
  journal   = {Mitteilungen der Deutschen Bodenkundlichen Gesellschaft. 59 (1989), H. 2},
  isbn      = {0343-107x},
  pages     = {927 -- 930},
  year      = {1989},
  language  = {de}
}
@article{HelsperMoelterKaminski1989,
  author    = {Helsper, Christoph and M{\"o}lter, W. and Kaminski, S.},
  title     = {Fast and Automated Testing of Different Air Filter Media / M{\"o}lter, W. ; Helsper, C. ; Kaminski, S.},
  series = {1. Europ{\"a}isches Symposium Partikelabscheidung aus Gasen : [PARTEC, N{\"u}rnberg, West Germany, 19. - 21. April 1989 ; preprints] = 1. European Symposium Separation of Particles from Gases / [Organisation und Durchf{\"u}hrung: N{\"u}rnbergMesse]. Hrsg. von: Friedrich L{\"o}ffler},
  journal   = {1. Europ{\"a}isches Symposium Partikelabscheidung aus Gasen : [PARTEC, N{\"u}rnberg, West Germany, 19. - 21. April 1989 ; preprints] = 1. European Symposium Separation of Particles from Gases / [Organisation und Durchf{\"u}hrung: N{\"u}rnbergMesse]. Hrsg. von: Friedrich L{\"o}ffler},
  publisher = {N{\"u}rnbergMesse},
  address   = {N{\"u}rnberg},
  pages     = {441 -- 457},
  year      = {1989},
  language  = {en}
}
@article{HelsperMoelterKaminski1989,
  author    = {Helsper, Christoph and M{\"o}lter, W. and Kaminski, S.},
  title     = {Fast and Automated Testing of Different Air Filter Media / M{\"o}lter, W. ; Helsper, C. ; Kaminski, S.},
  series = {Proceedings of the Filtech Conference, Karlsruhe 1989, Vol. 1},
  journal   = {Proceedings of the Filtech Conference, Karlsruhe 1989, Vol. 1},
  publisher = {Filtration Society},
  address   = {Oadby},
  pages     = {125 -- 136},
  year      = {1989},
  language  = {en}
}
@article{PietschKurbel1989,
  author    = {Pietsch, Wolfram and Kurbel, Karl},
  title     = {Expertensystem-Projekte. Entwicklungsmethodik, Organisation und Management / Kurbel, K., Pietsch, W.},
  series = {Informatik-Spektrum. 12 (1989), H. 2},
  journal   = {Informatik-Spektrum. 12 (1989), H. 2},
  isbn      = {0170-6012},
  pages     = {133 -- 146},
  year      = {1989},
  language  = {de}
}
@article{FoersterLayetLueth1989,
  author    = {F{\"o}rster, Arnold and Layet, J. M. and L{\"u}th, H.},
  title     = {Evaluation of dopant profiles and diffusion constants by means of electron energy loss spectroscopy},
  series = {Applied Surface Science. 41 - 42 (1989)},
  journal   = {Applied Surface Science. 41 - 42 (1989)},
  isbn      = {0169-4332},
  pages     = {306 -- 311},
  year      = {1989},
  language  = {en}
}
@article{HelsperMoelter1989,
  author    = {Helsper, Christoph and M{\"o}lter, L.},
  title     = {Erzeugung von Pr{\"u}faerosolen f{\"u}r die Kalibrierung von optischen Partikelmeßverfahren nach VDI 3491},
  series = {Technisches Messen. 56 (1989)},
  journal   = {Technisches Messen. 56 (1989)},
  isbn      = {0171-8096},
  pages     = {229 -- 234},
  year      = {1989},
  language  = {en}
}
@article{FoersterRizziLueth1989,
  author    = {F{\"o}rster, Arnold and Rizzi, Angela and L{\"u}th, H.},
  title     = {Epitaxial growth and characterization of Si/NiSi2/Si(111) heterostructures / Angela Rizzi ; A. F{\"o}rster ; H. L{\"u}th},
  series = {Surface Science. 211 - 212 (1989)},
  journal   = {Surface Science. 211 - 212 (1989)},
  isbn      = {0039-6028},
  pages     = {620 -- 629},
  year      = {1989},
  language  = {en}
}