Chun-Ta Chen and Te-Tan Liao and Hoang-Vuong Pham, On Climbing Winding Stairs for a Robotic Wheelchair. journal = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2010, vol. 41(5). 404 - 409 [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/4096.