SZYMANEK, Krzysztof. Argumentation and rational change of opinion. Folia Philosophica, [S. l.], v. 28, p. 247–248, 2010. DOI: 10.31261/fp.21184. Disponível em: https://journals.us.edu.pl/index.php/FOLIA/article/view/21184. Acesso em: 6 dec. 2025.