Zięba, Paweł J. “Does Logical Possibility Entail Metaphysical Possibility?”. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), no. 55 (June 24, 2014): 75–89. Accessed May 6, 2025. https://www.zfn.edu.pl/index.php/zfn/article/view/36.