Yosuke Tanigawa Jong-ok Kim Hideki Tode Koso Murakami Proportional and Deterministic Differentiation Methods of Multi-Class QoS in IEEE 802.11e Wireless LAN. 1570-1579 2008 91-A IEICE Transactions 7 http://dx.doi.org/10.1093/ietfec/e91-a.7.1570 db/journals/ieicet/ieicet91a.html#TanigawaKTM08