Team, Support. “Some Commutativity Conditions for Gamma-Generalized Boolean Semiring: Utsanee Leerawat, Katthaleeya Daowsud”. Thai Journal of Mathematics (November 22, 2019). Accessed May 5, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/847.