Guihong Cao Jianfeng Gao Jian-Yun Nie Jing Bai Extending query translation to cross-language query expansion with markov chain models. 351-360 2007 conf/cikm/2007 CIKM http://doi.acm.org/10.1145/1321440.1321491 db/conf/cikm/cikm2007.html#CaoGNB07