Gianluca Demartini Julien Gaugaz Wolfgang Nejdl A Vector Space Model for Ranking Entities and Its Application to Expert Search. 189-201 2009 ECIR http://dx.doi.org/10.1007/978-3-642-00958-7_19 conf/ecir/2009 db/conf/ecir/ecir2009.html#DemartiniGN09