@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}
}