PHO, N. V. On a theorem of shakedown theory. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 8, n. 2, p. 13–20, 1986. DOI: 10.15625/0866-7136/10362. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/10362. Acesso em: 28 apr. 2024.