BALUTA, H. Invariants: real or nominal?. Actual Problems of Mind, [S. l.], n. 13, p. 203–212, 2017. DOI: 10.31812/apd.v0i13.1818. Disponível em: https://journal.kdpu.edu.ua/apd/article/view/1818. Acesso em: 4 apr. 2025.