Yunni Xia Jun Chen Mingqiang Zhou Yu Huang A Petri-Net-Based Approach to QoS Estimation of Web Service Choreographies. 113-124 2009 APWeb/WAIM Workshops http://dx.doi.org/10.1007/978-3-642-03996-6_11 conf/apweb/2009w db/conf/apweb/apweb2009w.html#XiaCZH09