BOYANOV, P. Content of vol. 20, 2021, Journal Scientific and Applied Research: Content of vol. 20, 2021, Journal Scientific and Applied Research. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 20, n. 1, p. 3, 2023. DOI: 10.46687/jsar.v20i1.297. Disponível em: https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/297. Acesso em: 7 nov. 2024.