Funding for this research was provided by:
Structural Funds in the Operational Programme - Innovative Economy (IE OP) financed from the European Regional Development Fund (POIG.01.01.02-00-015/08-00, POIG.01.01.02-00-015/08-00)
Article History
Received: 13 December 2019
Revised: 23 March 2020
Accepted: 7 April 2020
First Online: 30 April 2020