Victoria Bellotti James Bo Begole Ed Huai-hsin Chi Nicolas Ducheneaut Ji Fang Ellen Isaacs Tracy H. King Mark W. Newman Kurt Partridge Bob Price Paul Rasmussen Michael Roberts Diane J. Schiano Alan Walendowski Activity-based serendipitous recommendations with the Magitti mobile leisure guide. 1157-1166 2008 CHI http://doi.acm.org/10.1145/1357054.1357237 conf/chi/2008 db/conf/chi/chi2008.html#BellottiBCDFIKNPPRRSW08