Tomal, Mateusz http://orcid.org/0000-0002-8393-1614
Funding for this research was provided by:
The publication is financed by a subsidy granted to the Cracow University of Economics
Article History
Received: 8 February 2021
Accepted: 22 May 2021
First Online: 6 June 2021
Declarations
:
: The author declare that they have no conflict of interest.