Trong Duc, Tran. “A FLEXIBLE APPROACH FOR CALCULATING COMPENSATION IN PLANNING PROJECT USING GEOGRAPHIC INFORMATION SYSTEM”. VNUHCM Journal of Science and Technology Development 7, no. 10 (October 31, 2004): 51-57. Accessed September 5, 2025. https://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3265.