Resumen
CZYZEWSKI Bazyli, Poznan University of Economics and Business, PolandGRABOWSKI Grzegorz, Poznan University of Economics and Business, PolandJARNO Klaudia, Poznan University of Economics and Business, PolandKVILINSKYI Oleksii, National Economy of Sciences of Ukraine, UkraineKWIATKIEWICZ Piotr, Military University of TechnologyMAZURKIEWICZ Joanna, Poznan University of Economics and Business, PolandMUTASCU Mihai, West University of Timisoara, RomaniaNIZIOL Krystyna, University of SzczecinPIATEK Dawid, Poznan University of Economics and Business, PolandPOPOVA Olga, Donetsk National Technical University (Pokrovsk), UkraineSAPA Agnieszka, Poznan University of Economics and Business, PolandSZCZERBOWSKI Radoslaw, Poznan University of TechnologyZWIERZCHLEWSKI Slawomir, Poznan University of Economics and Business, Poland