WÓJTOWICZ, K. Mathematical Proof – Argumentation or Derivation? – Part I. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 49, p. 63–80, 2011. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/120. Acesso em: 30 jan. 2023.