@book{BansalKleemannMeliss1990,
  author    = {Bansal, Narenda K. and Kleemann, Manfred and Meliß, Michael},
  title     = {Renewable energy sources and conversion technology},
  publisher = {Tata McGraw-Hill},
  address   = {New Delhi [u.a.]},
  isbn      = {0-07-460023-0},
  pages     = {XI, 454 S. Ill., graph. Darst.},
  year      = {1990},
  language  = {en}
}
@book{FassbenderVogler1990,
  author    = {Faßbender, Heinz and Vogler, Heiko},
  title     = {A call-by-need implementation of syntax directed functional programming},
  publisher = {RWTH, Fachgruppe Informatik},
  address   = {Aachen},
  pages     = {44 S. : graph. Darst.},
  year      = {1990},
  language  = {en}
}
@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}
}
@book{BaueerGilchRathetal.1990,
  author    = {Ba{\"u}er, Herbert and Gilch, Heinz Gerhard and Rath, Walter and Sch{\"u}mann, Uwe},
  title     = {Moisture-curing polyurethane-based hot-melt compositions = Feuchth{\"a}rtbare Heisschmelz-Zusammensetzungen auf Polyurethanbasis},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen},
  year      = {1990},
  language  = {en}
}
@book{AckermannMehlPeischl1990,
  author    = {Ackermann, Hans-Josef and Mehl, Max and Peischl, Markus},
  title     = {Modulares Graphik-Subsystem f{\"u}r die Echtzeitdarstellung von 3D-Anwendungen : Abschlußbericht ; Contract NT 2815-A-8 / Hans-Josef Ackermann; Max Mehl; Markus Peischl. Fachbereich Informatik, Technische Hochschule Darmstadt; Bundesministerium f{\"u}r Forschung und Technologie, Bonn},
  publisher = {Techn. Hochschule},
  address   = {Darmstadt},
  pages     = {ca. 100 S.},
  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}
}
@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}
}
@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 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 2 : Leichtmetalle und St{\"a}hle},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-862-4},
  pages     = {194 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}