MOSKAL'TSOVA, N. V.; SHURENKOV, V. M. On potentials of ergodic Markov chains. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 4, p. 446–449, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5745. Acesso em: 15 dec. 2025.