Yuanyuan Zhao Daniel C. Sturman Dynamic Access Control in a Content-based Publish/Subscribe System with Delivery Guarantees. 60 2006 conf/icdcs/2006 ICDCS http://doi.ieeecomputersociety.org/10.1109/ICDCS.2006.32 db/conf/icdcs/icdcs2006.html#ZhaoS06