SHYSHKA, R.; TKALYCH, M. The world in 2020: what are the threats to humanity?. Amazonia Investiga, [S. l.], v. 9, n. 26, p. 3–5, 2020. DOI: 10.34069/AI/2020.26.02.0. Disponível em: https://mail.amazoniainvestiga.info/index.php/amazonia/article/view/1132. Acesso em: 13 sep. 2025.