2017 Central European Review of Economics & Finance, T. 18, z. 2, s. 19-30
http://cejsh.icm.edu.pl/cejsh/element/bwmeta1.element.oai-ojs2-ceref-pl-article-33
2017 Central European Review of Economics & Finance, T. 18, z. 2, s. 19-30
http://cejsh.icm.edu.pl/cejsh/element/bwmeta1.element.oai-ojs2-ceref-pl-article-33