“Selecting Supplementary Professional Exercises to Facilitate Vaulting Gymnastics Technique for Second-Year Specialized Students in Physical Training of Hanoi University of Sports and Physical Education”. Tạp Chí Khoa học Đào tạo Và Huấn luyện Thể Thao, vol. 1, no. Đặc biệt, Dec. 2019, p. 433, https://tckhupes1.edu.vn/index.php/upes1/article/view/1673.