BOYANOV, P. Content of vol. 31, 2026, Journal Scientific and Applied Research: Content of vol. 31, 2026, Journal Scientific and Applied Research. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 31, n. 1, p. 4–5, 2026. DOI: 10.46687/jsar.v31i1.494. Disponível em: https://jsar.ftn.shu.bg/index.php/jsar/article/view/494. Acesso em: 6 nov. 2026.