Joseph Thaliath Mabel M. Joy Elizabeth Priya John Debabrata Das Service class downlink scheduling in WiMAX. 196-199 2008 COMSWARE http://dx.doi.org/10.1109/COMSWA.2008.4554406 conf/comsware/2008 db/conf/comsware/comsware2008.html#ThaliathJJD08