About this article
Published Online: Apr 01, 2017
Page range: 34 - 44
Received: Jan 12, 2017
Accepted: Feb 15, 2017
DOI: https://doi.org/10.1515/ffp-2017-0004
Keywords
© 2017
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Parzych, Agnieszka
Poland
Mochnacký, Sergej
Slovakia
Sobisz, Zbigniew
Poland
Kurhaluk, Natalia
Poland
Polláková, Nora
Slovakia