VELYCHKO, Vladyslav Ye. FREE SOFTWARE IN ELECTRONIC LEARNING FUTURE TEACHERS OF MATHEMATICS, PHYSICS AND COMPUTER SCIENCE. Information Technologies and Learning Tools, [S. l.], v. 52, n. 2, p. 18–26, 2016. DOI: 10.33407/itlt.v52i2.1367. Disponível em: https://journal.iitta.gov.ua/index.php/itlt/article/view/1367.. Acesso em: 28 apr. 2024.