LEVCHENKO, N.; Вozhko Y.; HONTARENKO, I.; BAIBEKOVA, L.; CHETVERYK, V. Professor Leonid Ushkalov’s Skovorodiana. Amazonia Investiga, [S. l.], v. 10, n. 43, p. 105–111, 2021. DOI: 10.34069/AI/2021.43.07.10. Disponível em: https://amazoniainvestiga.info/index.php/amazonia/article/view/1686. Acesso em: 3 jul. 2024.