Nguyễn Danh Giang, Tạ Thế Tài, Lê Đức Thịnh, Nguyễn Tùng Lâm, and Nguyễn Danh Huy, “High-Gain observer based fractional order sliding mode control for conical active magnetic bearing”, JMST, no. FEE, pp. 35–41, Dec. 2023.