Team, S. (2022). Common Fixed Point Theorems for Expansive Type Mappings in Cone Heptagonal Metric Spaces: Gizachew Haile, Kidane Koyas, Aynalem Girma. Thai Journal of Mathematics, 20(2), 639–652. Retrieved from https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1351