On the asymptotic behavior of the duration of a semi-Markov process in a subset of states
English version (Springer): Ukrainian Mathematical Journal 21 (1969), no. 6, pp 705-707.
Citation Example: Korolyuk V. S. On the asymptotic behavior of the duration of a semi-Markov process in a subset of states // Ukr. Mat. Zh. - 1969. - 21, № 6. - pp. 842–845.
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