@article{4a53ba11-a7b2-4da8-aa54-e738b344c1eb,
author = {},
title = {Wybrana bibliografia},
journal = {Principia},
volume = {1998},
number = {Volume 20},
year = {1998},
issn = {0867-5392},
pages = {195-200},keywords = {},
abstract = {},
doi = {},
url = {https://ejournals.eu/en/journal/principia/article/wybrana-bibliografia}
}