Mustafa، A. B. A. A. (2005). Extension of Non-Preemptive Priority Queuing Systems Analysis to the Multiple Servers Case (Multiple Communication Channels). مجلة دراسات حوض النيل، مج4, ع7 ، 5 - 26. مسترجع من http://search.mandumah.com/Record/608439
Mustafa، Amin Babiker Abd Alnabi. "Extension of Non-Preemptive Priority Queuing Systems Analysis to the Multiple Servers Case (Multiple Communication Channels)." مجلة دراسات حوض النيل مج4, ع7 (2005): 5 - 26. مسترجع من http://search.mandumah.com/Record/608439