Nuttaratat, T., P. Konggateyai, P. Laohasinnarong, and W. Wongsathan. “Self - Propelling Wheelchair in Hemiplegic Patients”. Siriraj Medical Bulletin, vol. 13, no. 4, Oct. 2020, pp. 286-92, https://he02.tci-thaijo.org/index.php/simedbull/article/view/241944.