Ndubuisi, U. R., and U. G. Udoaka. “A Note on &image;<sub>E</Sub> - Simple Left Restriction ω-Semigroup”. Asian Journal of Applied Sciences 3, no. 5 (October 26, 2015). Accessed April 24, 2024. https://www.ajouronline.com/index.php/AJAS/article/view/2966.