@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}
}