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1. License

The University of Silesia Press provides immediate open access to journal’s content under the Creative Commons BY-SA 4.0 license (http://creativecommons.org/licenses/by-sa/4.0/). Authors who publish with this journal retain all copyrights and agree to the terms of the above-mentioned CC BY-SA 4.0 license.

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3. User Rights

Under the CC BY-SA 4.0 license, the users are free to share (copy, distribute and transmit the contribution) and adapt (remix, transform, and build upon the material) the article for any purpose, provided they attribute the contribution in the manner specified by the author or licensor.

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I hereby declare that in the event of withdrawal of the text from the publishing process or submitting it to another publisher without agreement from the editorial office, I agree to cover all costs incurred by the University of Silesia in connection with my application.