Pasangka, I. G., M. A. Kleden, G. L. Putra, and N. A. Purnami. “FIXED POINT THEOREMS FOR (ψ, ϕ, ω)-WEAK CONTRACTIONS IN COMPLETE METRIC SPACES”. Journal of the Indonesian Mathematical Society, vol. 30, no. 3, Sept. 2024, https://jims-a.org/index.php/jimsa/article/view/1387.