Pinsky, Mark A., and Samuel Karlin, An Introduction to Stochastic Modeling, 4th ed (Amsterdam: Academic Press, 2011)
Ross, Sheldon M. and MyiLibrary, Introduction to Probability Models, 9th ed (Amsterdam: Academic Press, 2007) <http://catalogue.library.qmul.ac.uk/uhtbin/ezproxy.pl?url=http://lib.myilibrary.com?id=74703>