HELLER, Michał. Professor Heller’s adress at the polish club — Ognisko Polskie, 6th May, 2008. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 43, p. 30–32, 2008. DOI: 10.59203/zfn.43.230. Disponível em: https://www.zfn.edu.pl/index.php/zfn/article/view/230. Acesso em: 26 nov. 2025.