Nguyen, Duy, and Ha Phan. “Quay Cranes Scheduling at Mixed Cargo Ports Cargo Ports in Viet Nam”. Science and Technology Development Journal 20, no. K6 (October 31, 2017): 29-34. Accessed November 23, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1168.