PTAK, Paweł. APPLICATION OF SOFTWARE PACKAGES IN RESEARCH AND DIDACTICS. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, Rezekne, Latvia, v. 2, p. 589–597, 2016. DOI: 10.17770/sie2016vol2.1418. Disponível em: https://journals.ru.lv/index.php/SIE/article/view/1418.. Acesso em: 7 apr. 2025.