Tony Tsang Modelling QoS Based Admission Control in Mobile Multimedia Systems Using an Extension of GSPN. 3-10 2002 conf/icoin/2002-2 ICOIN (2) http://link.springer.de/link/service/series/0558/bibs/2344/23440003.htm db/conf/icoin/icoin2002-2.html#Tsang02