odwin A. Okeke and J. O. Olaleru, “Existence of Fixed Points of Certain Classes of Nonlinear Mappings”, Int. J. Math. Model. Comput., vol. 4, no. 4, pp. 357–364, Mar. 2014, Accessed: May 09, 2026. [Online]. Available: http://oiccpress.com/ijm2c/article/view/11231