Flaminio Borgonovo Matteo Cesana On stability and maximum throughput of exponential backoff mechanisms with two users. 72-76 2008 PM2HW2N http://doi.acm.org/10.1145/1454630.1454641 conf/mswim/2008pm2 db/conf/mswim/pm2hw2n2008.html#BorgonovoC08