Grygiel, Wojciech P. “On the Adequacy of Qualifying Roger Penrose As a Complex Pythagorean”. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), no. 65 (December 31, 2018): 61–84. Accessed February 2, 2023. https://zfn.edu.pl/index.php/zfn/article/view/439.