SAPAGOVAS, J. On the convergence of the sums of the Markov renewal processes to a many-dimensional Poisson process. Lithuanian Mathematical Journal, [S. l.], v. 9, n. 4, p. 817–826, 1969. DOI: 10.15388/LMJ.1969.20821. Disponível em: https://www.zurnalai.vu.lt/LMJ/article/view/20821. Acesso em: 8 jun. 2025.