Hong Loan, Le, Pham Dang Khoa, Tran Thien Phuc, and Nguyen Tan Tien. 2008. “STUDY ON DEVELOPMENT OF AN AUTOMATIC MARKING ROBOT”. VNUHCM Journal of Science and Technology Development 11 (3), 95-105. https://doi.org/https://doi.org/10.32508/stdj.v11i3.2625.