Kyu Il Kim Won Gil Choi Eun-Ju Lee Ung-Mo Kim A Secure Delegation Model Based on Multi-agent in Pervasive Environments. 304-313 2009 KES-AMSTA http://dx.doi.org/10.1007/978-3-642-01665-3_31 conf/kesamsta/2009 db/conf/kesamsta/kesamsta2009.html#KimCLK09