Prathomjit Khachorncharoenkul และ Sajee Pianskool. (2008) Weakly Regular T-Seminearrings and Simple T-Seminearrings. Chulalongkorn University:ม.ป.ท.Prathomjit Khachorncharoenkul และ Sajee Pianskool. 2008. Weakly Regular T-Seminearrings and Simple T-Seminearrings. ม.ป.ท.:Chulalongkorn University;Prathomjit Khachorncharoenkul และ Sajee Pianskool. Weakly Regular T-Seminearrings and Simple T-Seminearrings. ม.ป.ท.:Chulalongkorn University, 2008. Print.