Hong Loan, L., Dang Khoa, P., Thien Phuc, T. and Tan Tien, N. 2008. STUDY ON DEVELOPMENT OF AN AUTOMATIC MARKING ROBOT. Science and Technology Development Journal. 11, 3 (Mar. 2008), 95-105. DOI:https://doi.org/https://doi.org/10.32508/stdj.v11i3.2625.