BOYANOV, P. Content of vol. 19, 2020, Journal Scientific and Applied Research: Content of vol. 19, 2020, Journal Scientific and Applied Research. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 19, n. 1, p. 3, 2023. DOI: 10.46687/jsar.v19i1.286. Disponível em: https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/286. Acesso em: 22 nov. 2024.