FRANCHUK, Olena; PETROVA, Mariana; TOLKACHOVA, Galina. Elements of control of competitiveness of telecommunication companies. Economics Ecology Socium, [S. l.], v. 2, n. 4, p. 22–30, 2018. DOI: 10.31520/2616-7107/2018.2.4-3. Disponível em: https://ees-journal.com/index.php/journal/article/view/82. Acesso em: 29 jul. 2026.