KALEV, K. Special characteristics of spare . JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 2, n. 1, p. 28–33, 2023. DOI: 10.46687/jsar.v2i1.39. Disponível em: https://jsar.ftn.shu.bg/index.php/jsar/article/view/39. Acesso em: 11 apr. 2025.