db/conf/sigir/FrenchPCVEPM99.html James C. French Allison L. Powell James P. Callan Charles L. Viles Travis Emmitt Kevin J. Prey Yun Mou Comparing the Performance of Database Selection Algorithms. 238-245 SIGIR1999/P238.pdf 1999 conf/sigir/99 SIGIR http://doi.acm.org/10.1145/312624.312684 db/conf/sigir/sigir99.html#FrenchPCVEPM99