@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{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}
}
@book{GrapRajapaksha1989,
  author    = {Grap, Rolf Dietmar and Rajapaksha, Rolf},
  title     = {Gestaltung menschengerechter Arbeitspl{\"a}tze in der Schulbuchproduktion / [Zsstellung des Berichts: Rolf Rajapaksha]},
  publisher = {Cornelsen},
  address   = {Berlin},
  pages     = {78 S.},
  year      = {1989},
  language  = {de}
}
@book{Grap1989,
  author    = {Grap, Rolf Dietmar},
  title     = {Gestaltung menschengerechter Arbeitspl{\"a}tze in der Schulbuchproduktion: Ergebnisse der Ist-Analyse - Arbeitswissenschaftlicher Teil},
  publisher = {IAW - Lehrstuhl und Institut f{\"u}r Arbeitswissenschaft der RWTH Aachen},
  address   = {Aachen},
  year      = {1989},
  language  = {de}
}
@book{Grap1989,
  author    = {Grap, Rolf Dietmar},
  title     = {Gestaltung menschengerechter Arbeitspl{\"a}tze in der Schulbuchproduktion: Vorschl{\"a}ge zum Sollkonzept - Arbeitswissenschaftlicher Teil},
  publisher = {IAW - Lehrstuhl und Institut f{\"u}r Arbeitswissenschaft der RWTH Aachen},
  address   = {Aachen},
  year      = {1989},
  language  = {de}
}
@misc{Wahle1989,
  author    = {Wahle, Michael},
  title     = {Gestaltung von plattenf{\"o}rmigen Hohlprofilen oder wellblechartigen Profilen : Offenlegungsschrift / Europ{\"a}ische Patentschrift},
  publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen / Den Hague},
  pages     = {8 S. : graph. Darst.},
  year      = {1989},
  language  = {de}
}
@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{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{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{Gebhardt1989,
  author    = {Gebhardt, Andreas},
  title     = {H{\"a}rten von Kurbelwellen},
  pages     = {1 -- 14},
  year      = {1989},
  language  = {de}
}
@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}
}
@book{Fassbender1989,
  author    = {Faßbender, Heinz},
  title     = {Implementierung der Call-by-Need Auswertungsstrategie f{\"u}r Macro Tree-to-String Transducer auf Nested-Stack Maschinen mit geschachtelten Ausgabeb{\"a}ndern},
  address   = {Aachen},
  year      = {1989},
  language  = {de}
}
@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{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{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{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}
}
@book{Gerhardt1989,
  author    = {Gerhardt, Hans Joachim},
  title     = {Lagersicherheit lose verlegter W{\"a}rmed{\"a}mmplatten auf Flachd{\"a}chern gegen Abheben durch Windeinwirkung : Abschlußbericht zum Forschungsvorhaben "Lose verlegte W{\"a}rmed{\"a}mmplatten" / H. J. Gerhardt ; K. K. Bofah ; C. Kramer},
  publisher = {IRB-Verl.},
  address   = {Stuttgart},
  pages     = {26, 3, 32 S. : Ill., graph. Darst., 30 cm},
  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}
}
@misc{SponagelGrafGross1989,
  author    = {Sponagel, Stefan and Graf, G{\"u}nter and Groß, Heinz},
  title     = {Method for manufacturing a sealing ring : United States Patent 4,861,536 ; date of patent: Aug. 12, 1989 / assignee: Firma Carl Freudenberg. Inventors: Gunter Graf ; Heinz Gross ; Stefan Sponagel},
  publisher = {[United States Patent and Trademark Office]},
  address   = {[Alexandria, VA]},
  pages     = {5 S. : Ill.},
  year      = {1989},
  language  = {en}
}