BOYANOV, P. Content of vol. 1, 2012. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 1, n. 1, 2023. DOI: 10.46687/jsar.v1i1.9. Disponível em: https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/9. Acesso em: 7 nov. 2024.