U. Holzmann-Kaiser Eckhard Moeller Gerd Schürmann K. H. Weiss A Guide for Advanced Broadband Multimedia Applications - The BERKOM Reference Model Application-Oriented Layers. 376-388 1991 conf/gi/1991 GI Jahrestagung db/conf/gi/gi1991.html#Holzmann-KaiserMSW91