Babak Khosravifar Jamal Bentahar Maziar Gomrokchi Rafy Alam An approach to comprehensive trust management in multi-agent systems with credibility. 53-64 2008 RCIS http://dx.doi.org/10.1109/RCIS.2008.4632093 conf/rcis/2008 db/conf/rcis/rcis2008.html#KhosravifarBGA08