1. Anish Amin, Piyush Mehta, Abhilekh Sahay, Pranesh Kumar and Arun Kumar, “Optimal Solution of Real Time Problems Using Queuing Theory”, International Journal of Engineering and Innovative Technology, 3, (2014), pp. 268–270.
2. M. Babes and G.V. Serma, “Out-patient Queues at the Ibn-Rochd Health Centre”, Journal of the Operations Research 42(10), (1991) pp. 1086–1087.
3. An analysis of customer satisfaction with waiting times in a two-stage service process
4. K. Dhari and Tanzina Rahman, “Case Study for Bank ATM Queuing Models”, IOSR Journal of Mathematics, (2013) pp. 01–05.
5. Hana Sedlakova, “Priority Queuing Systems M/G/I”, Thesis, University of West Bohemia. (2012)