Twin Fixed Point Theorem for Operator Sums with Application to a Discrete ϕ-Laplacian Problem. Mathematical Structures and Computational Modeling, [S. l.], v. 1, p. 100–112, 2025. Disponível em: https://mscmjournal.com/index.php/mscm/article/view/13. Acesso em: 2 jan. 2026.