Prof. Hirofumi Maeda , trans. “Research and Development of Hybrid Electric Wheelchairs”. International Journal of Recent Technology and Engineering (IJRTE) 14, no. 3 (September 30, 2025): 14–21. Accessed April 8, 2026. https://journals.blueeyesintelligence.org/index.php/ijrte/article/view/894.