“Gamma-semigroups with Unities and Morita Equivalence for Monoids”, Eur. J. Pure Appl. Math., vol. 6, no. 1, pp. 1–10, Jan. 2013, Accessed: Nov. 21, 2024. [Online]. Available: https://www.ejpam.com/index.php/ejpam/article/view/1726