1. R. M. Blumenthal and R. K. Getoor, Markov Processes and Potential Theory, Academic Press, 1968.
2. K. L. Chung, Lectures from Markov Processes to Brownian Motion, Springer-Verlag, New York Heidelberg Berlin, 1982.
3. Z.-Q. Chen and M. Fukushima, Symmetric Markov processes, time change, and boundary theory, London Mathematical Society Monographs Series 35, Princeton University Press, Princeton, NJ, 2012.
4. C. Dellacherie and P. A. Meyer, Probabilities and Potential Vol. 1, 2, 3, North-Holland, 1982.
5. M. Fukushima, Dirichlet forms and Markov Processes, Kadansha and North Holland, 1980.