Minh Chau, Chu, Vương Thi Quynh, Tran Le Thuy, and Nguyen Hoang Vu. “USING GEOGEBRA FOR TEACHING PROBLEMS ON FIXED POINTS OF FAMILIES OF LINES AND CIRCLES IN SECONDARY SCHOOL GEOMETRY”. Journal of Science Educational Science 69, no. 5B (December 27, 2024): 130–136. Accessed December 14, 2025. https://hnuejs.edu.vn/es/article/view/714.