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Markov Processes and Potential Theory. Academic Press, New York-London 1968.
MR 0264757
[2] E. Б. Дынкин:
Oптимaльный выбop мoмeнтa ocтaнoвки Mapкoвcкoгo npoцecca. ДAH 150 (1963), 2, 238-240.
MR 0154329
[3] W. Feller: An Introduction to Pгobability Theoгy and its Applications. Vol. 1. John Wiley, New Yoгk 1961.