GRIGELIONIS, B. On optimal stopping of Markov processes. Lithuanian Mathematical Journal, [S. l.], v. 7, n. 2, p. 265–279, 1967. DOI: 10.15388/LMJ.1967.19955. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19955.. Acesso em: 17 aug. 2024.