[1]
Taylor, Howard M. and Karlin, Samuel, An introduction to stochastic modeling, 3rd ed. San Diego: Academic Press, 1998.
[2]
J. R. Norris, Markov chains, 1st pbk. ed., vol. Cambridge series on statistical and probabilistic mathematics. Cambridge, UK: Cambridge University Press, 1998 [Online]. Available: http://catdir.loc.gov/catdir/toc/cam027/96031570.html