About this article
Published Online: Apr 06, 2017
Page range: 60 - 65
Received: Nov 29, 2016
Accepted: Dec 29, 2016
DOI: https://doi.org/10.1515/pielxxiw-2016-0039
Keywords
© 2017
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Pabiś, Małgorzata
Poland
Kuncewicz, Dorota
Poland