BAHLIUK, Iu. B. Strategies for the Development of Leading Mobile Operators Communication of Ukraine. Statistics of Ukraine, [S. l.], v. 81, n. 2, p. 36–42, 2018. DOI: 10.31767/su.2(81)2018.02.05. Disponível em: https://su-journal.com.ua/index.php/journal/article/view/183. Acesso em: 27 jun. 2026.