@book{KnepperPfeiffer1999,
  author    = {Knepper, Ludger and Pfeiffer, Johann},
  title     = {Diplom-Ingenieur / Diplom-Ingenieurin (Fachhochschule) Maschinenbau, Energie- und W{\"a}rmetechnik},
  publisher = {Bertelsmann},
  address   = {Bielefeld},
  pages     = {Loseblattausg.},
  year      = {1999},
  language  = {de}
}
@book{WillmsBeer1993,
  author    = {Willms, Herbert and Beer, Stefan},
  title     = {Regelung eines H2/O2-Dampferzeugers},
  publisher = {DLR, Zentrale Allgemeine Dienste, Versand},
  address   = {K{\"o}ln},
  pages     = {116 S. : graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{BenknerDavid2005,
  author    = {Benkner, Thorsten and David, Klaus},
  title     = {Digital Mobile Radio Systems (Nicht erschienen?)},
  publisher = {Wiley},
  isbn      = {0-471-97591-5},
  pages     = {500},
  year      = {2005},
  language  = {en}
}
@book{Dekovic1996,
  author    = {Dekovic, Ivo},
  title     = {Ivo Dekovic : Prica za malu djecu 189-1996 / hrsg. von der Moderna Galerija Zagreb},
  address   = {Zagreb},
  pages     = {14 S. : zahlr. Ill.},
  year      = {1996},
  language  = {de}
}
@book{HegewaldAdolphs1995,
  author    = {Hegewald, Ulf and Adolphs, Volker},
  title     = {Ulf Hegewald : Ziegfeld Zweifallshammer / Hrsg.: Ingrid und Alexander Hoesch-Vial. Mit Textbeitr. von Volker Adolphs},
  publisher = {Plitt},
  address   = {Oberhausen},
  pages     = {52 S. : {\"u}berw. Ill.},
  year      = {1995},
  language  = {de}
}
@book{HegewaldDomke1982,
  author    = {Hegewald, Ulf and Domke, Helmut},
  title     = {Grundlagen konstruktiver Gestaltung, Teil 2 : Beispiele und Entwurfshilfen / Helmut Domke ; Ulf Hegewald},
  publisher = {Bauverl.},
  address   = {Wiesbaden [u.a.]},
  isbn      = {3762520135},
  pages     = {168 S : {\"u}berw. Ill., graph. Darst.},
  year      = {1982},
  language  = {de}
}
@book{HegewaldDomke1982,
  author    = {Hegewald, Ulf and Domke, Helmut},
  title     = {Grundlagen konstruktiver Gestaltung, Teil 1 : Theoretische Zusammenh{\"a}nge / Helmut Domke ; Ulf Hegewald},
  isbn      = {3762520135},
  pages     = {179 S : graph. Darst.},
  year      = {1982},
  language  = {de}
}
@book{Hegewald1991,
  author    = {Hegewald, Ulf},
  title     = {Plastiken 91 / Xylon, Museum + Werkst{\"a}tten},
  address   = {Schwetzingen},
  pages     = {34 S. : {\"u}berw. Ill.},
  year      = {1991},
  language  = {de}
}
@book{HegewaldBoeminghaus1973,
  author    = {Hegewald, Ulf and Boeminghaus, Dieter},
  title     = {Stellungen : 9 Texte, 9 Zeichnungen / [Texte] Dieter Boeminghaus ; [Zeichnungen] Ulf Hegewald},
  publisher = {Selbstverl. [Boeminghaus]},
  address   = {Aachen},
  pages     = {25 S. : {\"u}berw. Ill.},
  year      = {1973},
  language  = {de}
}
@book{FaboEisenbeisHageboelling1991,
  author    = {Fabo, Sabine and Eisenbeis, Manfred and Hageb{\"o}lling, Heide},
  title     = {Projekt f{\"u}r die Gr{\"u}ndung eines Internationalen Zentrums f{\"u}r Kunst und Medien : M{\"o}glichkeitsstudie f{\"u}r die UNESCO},
  publisher = {Kunsthochschule f{\"u}r Medien K{\"o}ln},
  address   = {K{\"o}ln},
  year      = {1991},
  language  = {de}
}