Son T. Vuong Kendra Cooper Mabo Robert Ito Petri net models for describing multimedia synchronization requirements. 260- 1995 conf/icnp/1995 ICNP http://doi.ieeecomputersociety.org/10.1109/ICNP.1995.524841 db/conf/icnp/icnp1995.html#VuongCI95