Leandro Y. Mano, Igor G. Oliveira, Luana O. Sawada, Bruno S. Faiçal, and Jó Ueyama. “IoT-Based System Monitoring of the Sleep Environment - A Study Aimed at the Elderly ”. International Journal of Robotics and Automation Technology 7 (November 16, 2020): 1–7. Accessed June 6, 2025. https://www.zealpress.com/index.php/ijrat/article/view/251.