@book{KleemannMeliss1993,
  author    = {Kleemann, Manfred and Meliß, Michael},
  title     = {Regenerative Energiequellen. 2., v{\"o}llig neu bearb. Aufl.},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {3-540-55085-2},
  pages     = {XXIII, 315 S. : Ill., graph. Darst., Kt},
  year      = {1993},
  language  = {de}
}
@book{Meliss1993,
  author    = {Meliß, Michael},
  title     = {Erneuerbare Energien verst{\"a}rkt nutzen!},
  publisher = {Bundesministerium f{\"u}r Wirtschaft},
  address   = {Bonn},
  pages     = {132 S. : Ill., graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{Wahle1993,
  author    = {Wahle, Michael},
  title     = {Kinematik. - (Dynamik ; 1)},
  edition   = {1. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-930085-25-9},
  pages     = {72 S. : graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{SchmidtMuellerStoecker1993,
  author    = {Schmidt, Ludwig and M{\"u}ller, Thomas and St{\"o}cker, Ernst E.},
  title     = {Die Organschaft im K{\"o}rperschaftsteuer-, Gewerbesteuer- und Umsatzsteuerrecht},
  edition   = {4. Aufl.},
  publisher = {Verl. Neue Wirtschafts-Briefe},
  address   = {Herne},
  isbn      = {3-482-44604-0},
  pages     = {393 S.},
  year      = {1993},
  language  = {de}
}
@book{FiedlerWollert1993,
  author    = {Fiedler, J{\"o}rg and Wollert, J{\"o}rg},
  title     = {C f{\"u}r die Automatisierungspraxis : Grundlagen, Algorithmen, Beispiele},
  publisher = {D{\"u}sseldorf},
  address   = {VDI-Verl.},
  isbn      = {3-18-401320-0},
  pages     = {VIII, 278 S.},
  year      = {1993},
  language  = {de}
}
@book{Schuermann1994,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {Metropole : Themen zur Großstadt},
  address   = {Aachen},
  pages     = {170 Bl.},
  year      = {1994},
  language  = {de}
}
@book{Schuermann1994,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {Pegel K{\"o}ln},
  publisher = {John},
  address   = {K{\"o}ln},
  isbn      = {3-88903-997-9},
  pages     = {143 S. : nur Ill.},
  year      = {1994},
  language  = {de}
}
@book{Call1994,
  author    = {Call, Guido},
  title     = {Eine kontaktsiuative Erkl{\"a}rung der TV - Werbewirkung unter Ber{\"u}cksichtigung aktueller TV - Nutzungsgewohnheiten},
  publisher = {Inst. f{\"u}r Wirtschaftswiss.},
  address   = {Aachen},
  pages     = {17 S., [2 Bl.]: graph. Darst.},
  year      = {1994},
  language  = {de}
}
@book{JacobsGebhardt1994,
  author    = {Jacobs, Stephan and Gebhardt, Michael},
  title     = {CoDecide - ein Baukasten zur Implemetierung von Werkzeugen zur Sichtenkopplung : [qualitative Entscheidungsunterst{\"u}tzung f{\"u}r Gruppen]; interner Bericht / St. Jacobs ; M. Gebhardt},
  publisher = {RWTH},
  address   = {Aachen},
  pages     = {14 Bl. : graph. Darst.},
  year      = {1994},
  language  = {de}
}
@book{JacobsJarke1994,
  author    = {Jacobs, Stephan and Jarke, Matthias},
  title     = {Requirements information management : the NATURE approach / RWTH Aachen, Fachgruppe Informatik. M. Jarke},
  publisher = {RWTH, Fachgruppe Informatik},
  address   = {Aachen},
  pages     = {27 S : graph. Darst.},
  year      = {1994},
  language  = {en}
}