Sara Sprenkle Emily Hill Lori L. Pollock Learning Effective Oracle Comparator Combinations for Web Applications. 372-379 2007 QSIC http://doi.ieeecomputersociety.org/10.1109/QSIC.2007.33 conf/qsic/2007 db/conf/qsic/qsic2007.html#SprenkleHP07