Stability estimate for the multidimensional elliptic obstacle problem with respect to the obstacle function. Journal of Prime Research in Mathematics, [S. l.], v. 8, n. 1, p. 12 – 21, 2012. Disponível em: https://jprm.sms.edu.pk/index.php/jprm/article/view/75. Acesso em: 4 feb. 2026.