Ibrahim Sagir, A. T. Imam, Abdulazeez Idris, and Lawasi Usman. “PRODUCT OF SEMI-TRANSPOSITIONS IN FINITE SEMIGROUP OF INJECTIVE ORDER-PRESERVING TRANSFORMATIONS: PRODUCT OF SEMI-TRANSPOSITIONS IN FINITE SEMIGROUP”. Journal of the Nigerian Mathematical Society, vol. 43, no. 4, Dec. 2024, pp. 369-76, https://ojs.ictp.it/jnms/index.php/jnms/article/view/1109.