John, Michael N., and Udoaka, Otobong. G. “Algebraic and Topological Analysis of Enveloping Semigroups in Transformation Groups: Proximal Equivalence and Homomorphic Image”. IJO - International Journal of Mathematics (ISSN: 2992-4421 ) 6, no. 12 (December 30, 2023): 09-23. Accessed January 10, 2026. https://www.ijojournals.com/index.php/m/article/view/769.