Akinremi, 'Bankole V, and Olushola kayode Adewale. “Fixed Point Theorem of Zamfirescus Type in Generalized Cone Metric Spaces”. International Journal of Advanced Mathematical Sciences 1, no. 3 (May 29, 2013): 104–108. Accessed April 28, 2024. https://www.sciencepubco.com/index.php/IJAMS/article/view/829.