Aungkanaporn Chankaew และ Amorn Wasanawichit. (2016) Pure ideals in T-semirings. Chulalongkorn University:ม.ป.ท.Aungkanaporn Chankaew และ Amorn Wasanawichit. 2016. Pure ideals in T-semirings. ม.ป.ท.:Chulalongkorn University;Aungkanaporn Chankaew และ Amorn Wasanawichit. Pure ideals in T-semirings. ม.ป.ท.:Chulalongkorn University, 2016. Print.