PHO, Nguyen Van. On a mathematical model of the theory of reliability. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 7, n. 2, p. 21–26, 1985. DOI: 10.15625/0866-7136/10386. Disponível em: https://vjmech.vast.vn/vjmech/article/view/10386. Acesso em: 9 nov. 2025.