BŁASZCZYK, P. On Euclid’s ’Elements’ Book V, Definition 7. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 46, p. 118–140, 2010. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/171. Acesso em: 3 may. 2024.