WOLAK, Zbigniew. Scientific philosophy of the Cracow Circle. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 36, p. 97–122, 2005. DOI: 10.59203/zfn.36.348. Disponível em: https://www.zfn.edu.pl/index.php/zfn/article/view/348. Acesso em: 10 jan. 2026.