Babayo, A. M., O. O. Olaiya, and E. Chibueze. “On the Digraphic Decomposition of Stable Quasi-Idempotents Within Finite Partial Transformation Semigroups”. International Journal of Mathematical Sciences and Optimization: Theory and Applications 11, no. 1 (January 15, 2025): 11-23. Accessed May 2, 2025. http://ijmso.unilag.edu.ng/article/view/2454.