Paradowski, Mariusz
Spytkowski, Michał
Kwaśnicka, Halina
Funding for this research was provided by:
European Union structural funds, Innovative Economy Operational Program (POIG.01.01.02-14-013/09)
Article History
Received: 2 September 2014
Accepted: 8 August 2017
First Online: 30 August 2017