(ψ, α, β) - weak contractions in partially ordered metric spaces. - Binayak S. Choudhury; Amaresh Kundu (Appl. Math. Lett., 2012)

Tripled Coincidence Point Theorems for Nonlinear Contractions in Partially Ordered Metric Spaces. - Binayak S. Choudhury; Erdal Karapinar; Amaresh Kundu (Int. J. Math. Math. Sci., 2012)