GRZYWACZ, Małgorzata. Bernhard Bolzano und die Zensur. Studia Germanica Posnaniensia, [S. l.], v. 22, p. 55–64, 2018. DOI: 10.14746/sgp.1995.22.04. Disponível em: https://pressto.amu.edu.pl/index.php/sgp/article/view/15730. Acesso em: 27 kwi. 2024.