SIEROTOWICZ, Tadeusz. Where are Sunspots? The Practical Method of Galileo as an example of Mental Model. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 66, p. 129–141, 2019. DOI: 10.59203/zfn.66.461. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/461. Acesso em: 17 dec. 2025.