Rüdiger Grammes Reinhard Gotzhein Christian Mahr Philipp Schaible Helmut Schleiffer Industrial Application of the SDL-Pattern Approach in UMTS Call Processing Development - Experience and Quantitative Assessment. 102-116 2003 conf/sdl/2003 SDL Forum http://link.springer.de/link/service/series/0558/bibs/2708/27080102.htm db/conf/sdl/sdl2003.html#GrammesGMSS03