1. J. Lamperti and J. L. Snell, Martin boundaries for certain Markov chains. J. Math. Soc. Japan
15(2) (1963), 113–128.
2. K. L. Chung, Markov Chains with Stationary Transition Probabilities. Springer-Verlag, Berlin, 1967.
3. J. L. Doob, Stochastic Processes. Wiley, New York, 1953.
4. I. I. Gihman and A. V. Skorohod, The Theory of Stochastic Processes, Vol. I (English translation). Springer-Verlag, Berlin, 1974.
5. F. Spitzer, Principles of Random Walk. Van Nostrand, Princeton, NJ, 1964.