1. [BD] Beurling A., Deny, J.: Dirichlet spaces. Proc. Nat. Acad. Sci. USA45, 208?215 (1959)
2. [BG] Blumenthal, R.M., Getoor, R.K.: Markov processes and potential theory. New York: Academic Press 1968
3. [C] Cartan, H.: Theorie du potential newtonien: énergie, capacité, suites de potentiels Bull. Soc. Math. France73, 74?106 (1945)
4. [DM] Dellacherie, C., Meyer, P.-A.: Probabilités et potentiel IV, Ch. XII a XVI. Paris: Hermann 1987
5. [Do] Doob, J.L.: Classical potential theory and its probabilistic counterpart. Berlin Heidelberg New York: Springer 1983