Smith Iampiboonvatana และ Phichet Chaoha. (2010) Virtual stability without continuity. Chulalongkorn University:ม.ป.ท.Smith Iampiboonvatana และ Phichet Chaoha. 2010. Virtual stability without continuity. ม.ป.ท.:Chulalongkorn University;Smith Iampiboonvatana และ Phichet Chaoha. Virtual stability without continuity. ม.ป.ท.:Chulalongkorn University, 2010. Print.