SPROGE, Ilze; CURKINA, Irina; JEKABSONE, Sandra; TSILIBINA, Valentina; RUMYANTSEVA, Julia; PILETSKY, Kirill. Production and Foreign Trade of Mineral Products in Latvia and Belarus. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 240–245, 2015. DOI: 10.17770/etr2013vol1.830. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/830.. Acesso em: 6 may. 2024.