[1]
M. A. Pinsky and S. Karlin, An introduction to stochastic modeling, 4th ed. Amsterdam: Academic Press, 2011.
[2]
S. M. Ross and MyiLibrary, Introduction to probability models, 9th ed. Amsterdam: Academic Press, 2007 [Online]. Available: http://catalogue.library.qmul.ac.uk/uhtbin/ezproxy.pl?url=http://lib.myilibrary.com?id=74703