HAJIYEVA, L. SOLVING COVID-19 PROBLEM. EJONS INTERNATIONAL JOURNAL, [S. l.], v. 4, n. 15, p. 594–603, 2020. DOI: 10.38063/ejons.289. Disponível em: https://ejons.org/index.php/ejons/article/view/140. Acesso em: 3 jul. 2024.