Velychko, Vladyslav Ye. “FREE SOFTWARE IN ELECTRONIC LEARNING FUTURE TEACHERS OF MATHEMATICS, PHYSICS AND COMPUTER SCIENCE”. Information Technologies and Learning Tools 52, no. 2 (January 26, 2025): 18–26. Accessed October 18, 2026. https://journal.iitta.gov.ua/index.php/itlt/article/view/1367.