Thanh, Pham Viet, Cuong, Le Duc, Huy, Dao Dang, Thanh, Luu Duc, Tan, Nguyen Duc, Duc Anh, Dang Trung, AND Thu Trang, Nguyen Thi. " ASR - VLSP 2021: Semi-supervised Ensemble Model for Vietnamese Automatic Speech Recognition" VNU Journal of Science: Computer Science and Communication Engineering [Online], Volume 38 Number 1 (30 June 2022)