Team, Support. “Some Proximally Coincidence Points for Non-Self Mappings and Self Mappings in Partially Ordered Metric Spaces: R. Wangkeeree, N. Sisarat”. Thai Journal of Mathematics 13, no. 3 (December 1, 2015): 613–625. Accessed May 14, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/536.