Sirirat Thammasiri และ Suluck Patarathammas. (2009) Trading volume and returns relationship in SET50 index futures market. Thammasat University,:ม.ป.ท.Sirirat Thammasiri และ Suluck Patarathammas. 2009. Trading volume and returns relationship in SET50 index futures market. ม.ป.ท.:Thammasat University,;Sirirat Thammasiri และ Suluck Patarathammas. Trading volume and returns relationship in SET50 index futures market. ม.ป.ท.:Thammasat University, 2009. Print.