Kaijun Ren Nong Xiao Junqiang Song Chi Yang Min Zhu Jinjun Chen Gradual Removal of QoS Constraint Violations by Employing Recursive Bargaining Strategy for Optimizing Service Composition Execution Path. 485-492 2009 ICWS http://dx.doi.org/10.1109/ICWS.2009.39 conf/icws/2009 db/conf/icws/icws2009.html#RenXSYZC09