GRIGELIONIS, B. On sufficient statistics for optimal stopping problems of stochastic processes. Lithuanian Mathematical Journal, [S. l.], v. 11, n. 3, p. 529–533, 1971. DOI: 10.15388/LMJ.1971.21011. Disponível em: https://www.zurnalai.vu.lt/LMJ/article/view/21011. Acesso em: 2 jul. 2025.