Mohamed Yacoubi Maria Emelianenko Natarajan Gautam Pricing in next generation networks: a queuing model to guarantee QoS. 59-84 2003 52 Perform. Eval. 1 http://dx.doi.org/10.1016/S0166-5316(02)00180-3 db/journals/pe/pe52.html#YacoubiEG03