About this article
Published Online: Sep 17, 2016
Page range: 261 - 270
DOI: https://doi.org/10.1515/eec-2016-0013
Keywords
© 2016 Nicolaus Copernicus University
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Goszczyński, Wojciech