About this article
Published Online: May 02, 2014
Page range: 75 - 78
DOI: https://doi.org/10.2478/plc-2014-0006
Keywords
© by Jan E. Okuniewski
This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Okuniewski, Jan E.