KUBALICA, T. Ernst Cassirer and Nelson Goodman on the problem of cognition (in Polish). Diametros, [S. l.], n. 30, p. 13–28, 2011. DOI: 10.13153/diam.30.2011.453. Disponível em: https://diametros.uj.edu.pl/diametros/article/view/453. Acesso em: 3 jul. 2022.