Eckstein, Michał, and Bartłomiej Skowron. “‘Is Logic a Physical variable?’ Introduction to the Special Issue”. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), no. 69 (December 30, 2020): 7–13. Accessed April 29, 2024. https://www.zfn.edu.pl/index.php/zfn/article/view/536.