Valentina Casola Luigi Coppolino Antonino Mazzeo Nicola Mazzocca Massimiliano Rak Design and implementation of TruMan, a Trust Manager Component for Distributed Systems. 34-40 2006 conf/secperu/2006 SecPerU http://doi.ieeecomputersociety.org/10.1109/SECPERU.2006.7 db/conf/secperu/secperu2006.html#CasolaCMMR06