Ray-I Chang Meng Chang Chen Jan-Ming Ho Ming-Tat Ko Schedulable region for VBR media transmission with optimal resource allocation and utilization. 61-79 2002 141 Inf. Sci. 1-2 db/journals/isci/isci141.html#ChangCHK02 http://dx.doi.org/10.1016/S0020-0255(01)00191-8