Team S. Outermost-Strongly Solid Variety of Commutative Semigroups: Sorasak Leeratanavalee. Thai J Math [Internet]. 2016 Aug. 1 [cited 2024 May 18];14(2):305-13. Available from: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/598