Sittichoke Songsa-ard และ Phichet Chaoha. (2009) Sufficient conditions for weak continuity and weak virtual stability in banach spaces. Chulalongkorn University:ม.ป.ท.Sittichoke Songsa-ard และ Phichet Chaoha. 2009. Sufficient conditions for weak continuity and weak virtual stability in banach spaces. ม.ป.ท.:Chulalongkorn University;Sittichoke Songsa-ard และ Phichet Chaoha. Sufficient conditions for weak continuity and weak virtual stability in banach spaces. ม.ป.ท.:Chulalongkorn University, 2009. Print.