Nguyen Thi Hang, SYLWIA GWOŹDZIEWICZ, Trung-Hieu Le, Dinh Tran Ngoc Huy, Le Thi Thanh Huong,. 2021. “Recognition of User Activity With a Combined Image and Accelerometer Wearable Sensor”. Design Engineering, August, 6407-21. http://www.thedesignengineering.com/index.php/DE/article/view/3139.