BOYANOV, P. Content of vol. 2, 2012. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 2, n. 1, p. 3–4, 2023. DOI: 10.46687/jsar.v2i1.36. Disponível em: https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/36. Acesso em: 7 nov. 2024.