@article{BaatzKehrmann1981,
  author    = {Baatz, Udo and Kehrmann, H.},
  title     = {Neue Produkte - per Zufall oder mit System?},
  series = {Jahrbuch f{\"u}r F{\"u}hrungskr{\"a}fte},
  journal   = {Jahrbuch f{\"u}r F{\"u}hrungskr{\"a}fte},
  publisher = {Expert-Verl.},
  address   = {Grafenau, Z{\"u}rich},
  year      = {1981},
  language  = {de}
}
@article{Heinrichs1981,
  author    = {Heinrichs, Horst},
  title     = {Graphische Datenverarbeitung bei FEM-Berechnungen von Maschinen : interaktive Geometrieerfassung u. Netzwerkerstellung},
  pages     = {III, 123 S. : graph. Darst.},
  year      = {1981},
  language  = {de}
}
@article{HeinrichsWeck1981,
  author    = {Heinrichs, Horst and Weck, M.},
  title     = {Wirtschaftliche FEM-Strukturanalyse durch graphisch interaktive Netzaufbereitung},
  series = {Industrie Anzeiger. 103 (1981), H. 79},
  journal   = {Industrie Anzeiger. 103 (1981), H. 79},
  pages     = {16 -- 20},
  year      = {1981},
  language  = {de}
}
@article{HeinrichsSteinke1981,
  author    = {Heinrichs, Horst and Steinke, P.},
  title     = {Praxisgerechter Einsatz der Finite-Element-Methode zur Bauteilanalyse},
  series = {Industrie Anzeiger. 103 (1981), H. 79},
  journal   = {Industrie Anzeiger. 103 (1981), H. 79},
  pages     = {42 -- 43},
  year      = {1981},
  language  = {de}
}
@article{HeinrichsWeck1981,
  author    = {Heinrichs, Horst and Weck, H.},
  title     = {Efficient finite-element structural analysis by interactive graphic mesh generation},
  series = {CIRP Annals. 30 (1981), H. 1},
  journal   = {CIRP Annals. 30 (1981), H. 1},
  pages     = {279 -- 284},
  year      = {1981},
  language  = {en}
}
@article{Knepper1981,
  author    = {Knepper, Ludger},
  title     = {Im neuen Lufthansa-Frachtterminal: vom Hochregallager direkt ins Flugzeug},
  series = {Foerdermittel Journal. Kennzifferzeitschrift fuer Materialfluss, Lager und Transport. 13 (1981), H. 7/8},
  journal   = {Foerdermittel Journal. Kennzifferzeitschrift fuer Materialfluss, Lager und Transport. 13 (1981), H. 7/8},
  isbn      = {0013-5674},
  pages     = {22 -- 24},
  year      = {1981},
  language  = {de}
}
@article{StrohmeierEichholz1981,
  author    = {Strohmeier, Andreas and Eichholz, G{\"u}nter},
  title     = {Elimination von Phosphaten in technisch bel{\"u}fteten Abwasserteichen / Eichholz, G{\"u}nter; Strohmeier, Andreas},
  series = {Wasser und Boden. 33 (1981), H. 5},
  journal   = {Wasser und Boden. 33 (1981), H. 5},
  isbn      = {0043-0951},
  pages     = {230 -- 239},
  year      = {1981},
  language  = {de}
}
@article{Polumsky1981,
  author    = {Polumsky, Dieter},
  title     = {Pr{\"a}missen und Methoden bei großr{\"a}umigen Verkehrsprognosen},
  publisher = {Inst.},
  address   = {Aachen},
  pages     = {67 -- 75},
  year      = {1981},
  language  = {de}
}
@article{SponagelAkbay1981,
  author    = {Sponagel, Stefan and Akbay, S.},
  title     = {{\"U}ber die Stabilit{\"a}t viskometrischer Str{\"o}mungen},
  series = {Rheologica acta. 20 (1981), H. 6},
  journal   = {Rheologica acta. 20 (1981), H. 6},
  isbn      = {0035-4511},
  pages     = {579 -- 590},
  year      = {1981},
  language  = {de}
}
@article{HagemannHennings1981,
  author    = {Hagemann, Hans-J{\"u}rgen and Hennings, D.},
  title     = {Reversible Weight change of acceptor-doped BaTiO3. Hagemann, H. J.; Hennings, D.},
  series = {Journal of the American Ceramic Society. 64 (1981)},
  journal   = {Journal of the American Ceramic Society. 64 (1981)},
  isbn      = {0002-7820},
  pages     = {590 -- 594},
  year      = {1981},
  language  = {en}
}