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[2] Kendall D. G.: Unitary dilations of one-parameter semi-groups of Markov transition operators, and the corresponding integral representations for Markov processes with a countable infinity of states. Proc. London Math. Soc, (3) P, 417-431 (1959). MR 0116390

[3] Speakman J. M. O.: Two Markov chains with a common skeleton. Z. Wahrscheinlichkeitstheorie verw. Geb. 7, 224 (1967). DOI 10.1007/BF00532638 | MR 0212880 | Zbl 0156.18504