« ON THE COMBINATORIAL PROPERTIES OF NILPOTENT AND IDEMPOTENT CONJUGACY CLASSES OF THE INJECTIVE ORDER-DECREASING TRANSFORMATION SEMIGROUP » (2021) FULafia Journal of Science and Technology, 1(1), p. 91–94. Disponible sur: https://lafiascijournals.org.ng/index.php/fjst/article/view/15 (Consulté le: 17 mai 2026).