VELYCHKO, Vladyslav Ye. IMPLEMENTATION STRATEGY OF FREE SOFTWARE IN THE PROCESS OF PREPARATION OF TEACHERS OF MATHEMATICS, PHYSICS AND COMPUTER SCIENCE. Information Technologies and Learning Tools, [S. l.], v. 50, n. 6, p. 100–107, 2016. DOI: 10.33407/itlt.v50i6.1293. Disponível em: https://journal.iitta.gov.ua/index.php/itlt/article/view/1293. Acesso em: 8 jul. 2025.