Two stable mixed finite element approximations for the obstacle problem of the Euler-Bernoulli beam. Gulf Journal of Mathematics, [S. l.], v. 23, n. 1, 2026. DOI: 10.56947/csf4nz04. Disponível em: https://gjom.org/index.php/gjom/article/view/4283. Acesso em: 16 sep. 2026.