Wójtowicz, Krzysztof. “Mathematical Proof – Argumentation or Derivation? – Part I”. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), no. 49 (November 19, 2011): 63–80. Accessed January 30, 2023. https://zfn.edu.pl/index.php/zfn/article/view/120.