BALIKOVA, Vita. Offer Opportunities of Levelling Online Courses for Latvia. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 2, p. 7–10, 2015. DOI: 10.17770/etr2013vol2.844. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/844.. Acesso em: 1 may. 2024.