Team, S. “Measurement and Comparison of Rice Production Efficiency in Thailand and India: An Efficient Frontier Approach: Duangthip Sirikanchanarak, Jianxu Liu, Songsak Sriboonchitta”. Thai Journal of Mathematics, Oct. 2017, pp. 215-28, https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/657.