About this article
Published Online: Apr 06, 2017
Page range: 5 - 11
Received: Jul 15, 2016
Accepted: Nov 22, 2016
DOI: https://doi.org/10.1515/pielxxiw-2016-0031
Keywords
© 2017
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Cisińska, Anna
Poland