NUMMELIN, E. The convergence of sums of transition probabilities of a positive recurrent Markov chain. MATHEMATICA SCANDINAVICA, [S. l.], v. 48, p. 79–95, 1981. DOI: 10.7146/math.scand.a-11901. Disponível em: https://www.mscand.dk/article/view/11901. Acesso em: 22 nov. 2024.