PHO, N. V. On a mathematical model of the theory of reliability. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 7, n. 2, p. 21–26, 1985. DOI: 10.15625/0866-7136/10386. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/10386. Acesso em: 2 may. 2024.