Rad, S. G. and Rahimi, H. (2013) “Common Fixed-Point Theorems and c-distance in Ordered Cone Metric Spaces”, Ukrains’kyi Matematychnyi Zhurnal, 65(12), pp. 1667–1680. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2545 (Accessed: 6 December 2025).