Varun Gupta Karl Sigman Mor Harchol-Balter Ward Whitt Insensitivity for PS server farms with JSQ routing. 24-26 2007 25 SIGMETRICS Performance Evaluation Review 2 http://doi.acm.org/10.1145/1330555.1330566 db/journals/sigmetrics/sigmetrics35.html#GuptaSHW07