1. The theory of probability and telephone congestion;A K Erlang;Nyt Tidsskrift for mathematics,1909
2. Queuing system with phase type service;R R Jackson;Operational Research, Quarterly,1954
3. On some networks of queuing & scheduling system;T P Singh;Shrinagar,1986
4. New results on the single server queue with a batch Markovian arrival process;D M Lucantoni;Communications in Statistics. Stochastic Models,1991
5. A batch arrival queue with a vacation time under single vacation policy;G Choudhury;Computers & Operations Research,2002