Coupled Coincidence Point Theorems for (ψ, α, β)-Weak Contractions in Partially Ordered Partial Metric Spaces. Punjab University Journal of Mathematics, [S. l.], v. 45, n. 1, p. 48–59, 2013. Disponível em: https://pujm.pu.edu.pk/index.php/pujm/article/view/14. Acesso em: 29 jun. 2025.