Warud Nakkhasen และ Ronnason Chinram. (2023) Ternary Semigroups Characterized by Spherical Fuzzy Bi-ideals. <i>Science & Technology Asia</i>, <i>28</i>(4), 86-107.Warud Nakkhasen และ Ronnason Chinram. "Ternary Semigroups Characterized by Spherical Fuzzy Bi-ideals". Science & Technology Asia 28 (2023):86-107.Warud Nakkhasen และ Ronnason Chinram. Ternary Semigroups Characterized by Spherical Fuzzy Bi-ideals. Research Administration Division:ม.ป.ท. 2023.