Wijetunga, Chatura Sewwandi. “Rice Production Structures in Sri Lanka: The Normalized Translog Profit Function Approach”. Asian Journal of Agriculture and Rural Development 6, no. 2 (February 3, 2016): 21–35. Accessed December 22, 2024. https://archive.aessweb.com/index.php/5005/article/view/1455.