MEKKI, O. B.; FRÉMOND, M. Collision of four balls aligned. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 32, n. 3, p. 145–156, 2010. DOI: 10.15625/0866-7136/32/3/302. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/302. Acesso em: 24 apr. 2024.