Baron, Karol http://orcid.org/0000-0002-0807-2776
Funding for this research was provided by:
University of Silesia
Article History
Received: 26 January 2019
Revised: 26 March 2019
First Online: 5 April 2019
Change Date: 27 January 2020
Change Type: Correction
Change Details: In the original publication, Example 2.2 was incorrectly published.