NORAS, Andrzej J. Controversy about the certainty of knowledge. Folia Philosophica, [S. l.], v. 28, p. 213–215, 2010. DOI: 10.31261/fp.21177. Disponível em: https://journals.us.edu.pl/index.php/FOLIA/article/view/21177. Acesso em: 6 dec. 2025.