Nguyen Nhat Thang, Bui Hai Le, Tran Duc Trung, and Tran Minh Thuy. “On - off Controls in the Problem of Bending Beams”. <i>Vietnam Journal of Science and Technology</i> 51, no. 6 (March 6, 2018): 681–688. Accessed January 11, 2026. https://vjs.ac.vn/jst/article/view/11630.