GRIGELIONIS, B. Limit theorems for the sums of multidimensional stochastic step processes. Lithuanian Mathematical Journal, [S. l.], v. 10, n. 1, p. 29–49, 1970. DOI: 10.15388/LMJ.1970.20834. Disponível em: https://www.journals.vu.lt/LMJ/article/view/20834.. Acesso em: 4 may. 2024.