RAKHMATULLAEV, Marat. Virtual Digital Libraries for Professional Education. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, Rezekne, Latvia, v. 4, p. 500–508, 2015. DOI: 10.17770/sie2015vol4.413. Disponível em: https://archive-journals.rtu.lv/sie/article/view/1198.. Acesso em: 11 mar. 2026.