Variational Inequalities for Systems of Strongly Nonlinear Elliptic Operators of Infinite Order. Global Journal of Science Frontier Research, [S. l.], v. 18, n. F1, p. 37–42, 2018. Disponível em: https://testing.journalofscience.org/index.php/GJSFR/article/view/2157. Acesso em: 5 feb. 2026.