Team, Support. “Fixed Point Theorems for Generalized R-Contraction in B-Metric Spaces: Atit Wiriyapongsanon, Narawadee Phudolsitthiphat”. Thai Journal of Mathematics (November 22, 2018): 277–287. Accessed May 18, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/742.