ET. AL., Ameera N. Alkiffai,. Solving Vibrating Spring Problem Using Variational Formulation. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 12, n. 5, p. 1472–1476, 2021. Disponível em: https://turcomat.org/index.php/turkbilmat/article/view/2114. Acesso em: 25 nov. 2025.