Xiangli Qu Jingwei Zhong Xuejun Yang Towards Reliable and Trustworthy Cooperation in Grid: A Pre-evaluating Set Based Trust Model. 224-235 2006 conf/iccsa/2006-5 ICCSA (5) http://dx.doi.org/10.1007/11751649_24 db/conf/iccsa/iccsa2006-5.html#QuZY06