Miao Zhao Yuanyuan Yang Huiling Zhu Wenjian Shao Victor O. K. Li Priority-based opportunistic MAC protocol in IEEE 802.11 WLANs. 84-94 2008 3 IJSNET 2 http://dx.doi.org/10.1504/IJSNET.2008.017228 db/journals/ijsnet/ijsnet3.html#ZhaoYZSL08