Team, Support. “The Least Group Congruence on E-Inversive Semigroups and E-Inversive E-semigroups : M. Siripitukdet, S. Sattayaporn”. Thai Journal of Mathematics 3, no. 2 (December 1, 2005): 163–169. Accessed May 7, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/21.