Piyaneeranart, Manussawee, and Mahasak Ketcham. “Automatically Moving Robot Intended for the Elderly With Voice Control”. International Journal of Online and Biomedical Engineering (iJOE) 17, no. 06 (June 25, 2021): pp. 19–48. Accessed April 18, 2024. https://online-journals.org/index.php/i-joe/article/view/22299.