@article{71c9aecc-9abf-4fed-8607-8a7fbe5ff333,
author = {Piotr Łukowski},
title = {Paradoks kamienia},
journal = {Principia},
volume = {2001},
number = {Tom 30-31},
year = {2001},
issn = {0867-5392},
pages = {59-66},keywords = {},
abstract = {},
doi = {},
url = {https://ejournals.eu/czasopismo/principia/artykul/paradoks-kamienia}
}