Adaptive Mixed Finite Element Method for Elliptic Problems with Concentrated Source Terms. Indonesian Journal of Science and Technology, [S. l.], v. 4, n. 2, p. 263–269, 2019. DOI: 10.17509/ijost.v4i2.18183. Disponível em: https://ijost.upi.edu/index.php/ijost/article/view/217. Acesso em: 21 oct. 2026.