This is an open access journal which means that all content is freely available without charge to the user or his/her institution.
Since Issue 16–17 (2024–2025) articles published in this journal are available under a licence Creative Commons Attribution-ShareAlike 4.0 International (
CC BY-SA 4.0).
The articles published in Issues 9 (2016) – 15 (2023) articles published in this journal are available under a licence Creative Commons Attribution-ShareAlike 3.0 Poland (
CC BY-SA 3.0 PL).
The articles published in Issues 1 (2010) – 8 (2015) are available under a licence Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (
CC BY-NC-ND 3.0 Unported).
