1.
Sawatraksa N, Lekjaroensri C, Wetchakorn P, Sitong P. Characterization of Regularity on Elements in the Bicyclic Semigroup. PKRU SciTech J. [internet]. 2024 Nov. 29 [cited 2026 Sep. 10];8(2):53-64. available from: https://ph01.tci-thaijo.org/index.php/pkruscitech/article/view/257368