STOYANOV, S. Space research and national security. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 1, n. 1, p. 154–157, 2023. DOI: 10.46687/jsar.v1i1.33. Disponível em: https://jsar.ftn.shu.bg/index.php/jsar/article/view/33. Acesso em: 7 nov. 2024.