@book{Borys.1990b,
  author = {Borys, Bernd-Burkhard and Sundstr{\"o}m, G. A. and Fejes, Lajos and Str{\"a}tz, Gerd},
  title = {The intelligent graphical editor with design support and user model (IGE3): ESPRIT-GRADIENT Report P857-WP11-UKS 059},
  publisher = {Institut f{\"u}r Me{\ss}- u. Automatisierungstechnik},
  year = {1990},
  volume = {10}
}

@book{Borys.1990b,
  author = {Borys, Bernd-Burkhard and Sundström, G. A. and Fejes, Lajos and Strätz, Gerd},
  title = {The intelligent graphical editor with design support and user model (IGE3): ESPRIT-GRADIENT Report P857-WP11-UKS 059},
  publisher = {Institut für Meß- u. Automatisierungstechnik},
  year = {1990},
  volume = {10}
}