Rukchart Prasertpong และ Sasisophit Buada. (2021) Rough Interior Ideals and Rough Quasi-Ideals inApproximation Spaces of Semigroups under Preorder andCompatible Relations. <i>Suan Sunandha Science and Technology Journal</i>, <i>8</i>(1), 21 to 26.Rukchart Prasertpong และ Sasisophit Buada. "Rough Interior Ideals and Rough Quasi-Ideals inApproximation Spaces of Semigroups under Preorder andCompatible Relations". Suan Sunandha Science and Technology Journal 8 (2021):21 to 26.Rukchart Prasertpong และ Sasisophit Buada. Rough Interior Ideals and Rough Quasi-Ideals inApproximation Spaces of Semigroups under Preorder andCompatible Relations. Faculty of Science and Technology, Suan Sunandha Rajabhat University:ม.ป.ท. 2021.