Dat, Duong Tan, Le Hong Ky, Son Hoang, and Tran Duc Thuan. “Building an Anti-Tip System for Robots Transporting People Up and Down the Stairs”. Engineering, Technology & Applied Science Research 15, no. 3 (June 4, 2025): 23756–23766. Accessed April 29, 2026. https://etasr.com/index.php/ETASR/article/view/10618.