HELLER, Michał. Matter and causality - concretes or universals?. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 48, p. 33–45, 2011. DOI: 10.59203/zfn.48.138. Disponível em: https://www.zfn.edu.pl/index.php/zfn/article/view/138. Acesso em: 26 nov. 2025.