Ben Carterette Virgiliu Pavlu Evangelos Kanoulas Javed A. Aslam James Allan If I Had a Million Queries. 288-300 2009 ECIR http://dx.doi.org/10.1007/978-3-642-00958-7_27 conf/ecir/2009 db/conf/ecir/ecir2009.html#CarterettePKAA09