VEGA, H.; SILVA, D. THE TEACHING AND LEARNING OF FORMAL SYSTEMS, OF MATHEMATICS IN THE UNIVERSITY CONTEXT. DIALOGICA, Venezuela, v. 17, n. 2, p. 20–46, 2020. DOI: 10.56219/dialgica.v17i2.1521. Disponível em: https://revistas.upel.edu.ve/index.php/dialogica/article/view/1521. Acesso em: 5 oct. 2026.