VINCIŪNAS, Juozas. The Problems of the Theory of Probability. Problemos, [S. l.], v. 11, p. 121–123, 1973. DOI: 10.15388/Problemos.1973.11.5517. Disponível em: https://www.journals.vu.lt/problemos/article/view/5517.. Acesso em: 17 aug. 2024.