Billingsley, Patrick. Statistical inference for Markov processes / by Patrick Billingsley. - Chicago ; London : University of Chicago Press, c1961 [Impression 1968] - 75 p. ; 25 cm. - Statistical research monographs v. 2. . Includes index. Subjects--Topical Terms: Markov processes. Dewey Class. No.: 519.54 / BIS 1968