00327nas a2200121   4500000000100000000000100001008004100002260003300043100001600076700002100092700001700113245007500130       2009                            d  bSpringeraBerlin, Heidelberg1 aNabil Sahli1 aGabriele Lenzini1 aHenk Eertink00aTrustworthy Agent-Based Recommender System in a Mobile P2P Environment