Yelisieieva O.К.; PLEKHANOVA, O. O. Statistical Analysis of the External Debt of Ukraine by Constructing a Cognitive Chart. Statistics of Ukraine, [S. l.], n. 3(70), p. 23–27, 2015. Disponível em: https://su-journal.com.ua/index.php/journal/article/view/25. Acesso em: 28 jun. 2026.