Borys, Bernd-Burkhard and Fejes, Lajos and Johannsen, Gunnar and Sundström, G. A. and Borchers, H. W. and Elzer, Peter F. and Weisang, Claus and Zinser, Klaus. Concepts, Design and Prototype Implementation for an Intelligent Graphical Editor (IGE1). IMAT-Bericht / MMS, (MMS-6) Kassel, Year 1988.

Borys, Bernd-Burkhard and Fejes, Lajos and Johannsen, Gunnar and Sundström, G. A. and Borchers, H. W. and Elzer, Peter F. and Weisang, Claus and Zinser, Klaus. Concepts, Design and Prototype Implementation for an Intelligent Graphical Editor (IGE1). IMAT-Bericht / MMS, (MMS-6) Kassel, Year 1988.