GRYGIEL, W. P. On the adequacy of qualifying Roger Penrose as a complex Pythagorean. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 65, p. 61–84, 2018. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/439. Acesso em: 2 feb. 2023.