@book{Schuermann1990,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {Das n{\"o}tig},
  publisher = {Ed. Travers},
  address   = {Neuchatel},
  pages     = {121 S. : nur Ill.},
  year      = {1990},
  language  = {de}
}
@book{Hegewald1989,
  author    = {Hegewald, Ulf},
  title     = {Ulf Hegewald : Skulpturen aus Ton 1985 - 89 / Text: Wolfgang Becker. Gestaltung: Ulf Hegewald},
  address   = {Aachen},
  pages     = {91 S. : {\"u}berw. Ill.},
  year      = {1989},
  language  = {de}
}
@book{MaetherHegewald1988,
  author    = {Maether, Christiane and Hegewald, Ulf},
  title     = {Bild und Vorbild : Studenten der Fachhochschule Aachen zeichnen und malen im Suermondt-Ludwig-Museum unter der Leitung von Prof. Christiane Maether und Prof. Dr. Ulf Hegewald},
  address   = {Aachen},
  pages     = {77 S. : nur Ill.},
  year      = {1988},
  language  = {de}
}
@book{Maether1987,
  author    = {Maether, Christiane},
  title     = {Zeichnung und Malerei / Text: Wolfgang Becker},
  address   = {Aachen},
  pages     = {71 S.: {\"u}berw. Ill.},
  year      = {1987},
  language  = {de}
}
@book{Hegewald1987,
  author    = {Hegewald, Ulf},
  title     = {Ulf Hegewald / hrsg. von Marianne Hennemann},
  publisher = {Galerie Hennemann},
  address   = {Bonn},
  isbn      = {3-88482-032-X},
  pages     = {88 S. : {\"u}berw. Ill.},
  year      = {1987},
  language  = {de}
}
@book{Maether1986,
  author    = {Maether, Christiane},
  title     = {Arbeiten von 1973 - 1985 / Hrsg.: Berthold Roland},
  publisher = {Landesmuseum},
  address   = {Mainz},
  pages     = {71 S. : {\"u}berw. Ill.},
  year      = {1986},
  language  = {de}
}
@book{Hegewald1985,
  author    = {Hegewald, Ulf},
  title     = {Das Duisburg-Projekt : Studenten der Fachhochschule Aachen zeichnen und malen in Duisburg-Hamborn / Fachhochschule Aachen. Projektleitung: Ulf Hegewald ...},
  address   = {Aachen},
  pages     = {77 S. : nur Ill.},
  year      = {1985},
  language  = {de}
}
@book{Hegewald1984,
  author    = {Hegewald, Ulf},
  title     = {Toscana-Graphie : Dokumentation zweier Exkursionen / Fachhochschule Aachen, Fachbereich Gestaltung. Exkursionsleitung: Ulf Hegewald ...},
  address   = {Aachen},
  pages     = {54 S. : nur Ill.},
  year      = {1984},
  language  = {de}
}
@article{Schuermann1983,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {v.l.n.r. - 17 Fotografien von Wilhelm Sch{\"u}rmann},
  series = {Kunstforum International (1983)},
  journal   = {Kunstforum International (1983)},
  pages     = {222},
  year      = {1983},
  language  = {de}
}
@book{Schuermann1983,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {Song of joy : Kippenberger, Sch{\"u}rmann [Martin Kippenberger - gemalte Bilder ; Wilhelm Sch{\"u}rmann - fotografierte Bilder]},
  publisher = {Neue Galerie},
  address   = {Aachen},
  pages     = {20 S. : {\"u}berw. Ill.},
  year      = {1983},
  language  = {en}
}