STATULEVIČIUS, V. Local limit theorems and asymptotic expansions for non-stationary Markov chains. Lithuanian Mathematical Journal, [S. l.], v. 1, n. 1-2, p. 231–313, 1961. DOI: 10.15388/LMJ.1961.19216. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19216.. Acesso em: 19 jul. 2024.