Wasan Yoksenakul และ Sumrerng Jugjai. (2011) Improvement of Thermal Efficiency of Heat-Recirculating Gas Burner /. King Mongkut's University of Technology Thonburi,:ม.ป.ท.Wasan Yoksenakul และ Sumrerng Jugjai. 2011. Improvement of Thermal Efficiency of Heat-Recirculating Gas Burner /. ม.ป.ท.:King Mongkut's University of Technology Thonburi,;Wasan Yoksenakul และ Sumrerng Jugjai. Improvement of Thermal Efficiency of Heat-Recirculating Gas Burner /. ม.ป.ท.:King Mongkut's University of Technology Thonburi, 2011. Print.