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Małgorzata Grzywińska-Rąpca
University of Warmia and Mazury in Olsztyn, Faculty of Economic SciencesOlsztyn, Poland
Nelson Duarte
Polytechnic of Porto / INESC TEC / IRIEM, School of Management and Technology, Felgueiras, Portugal
Altin Kulli
Qiriazi University College, Faculty of EconomyTirana, Albania
Goci Enkelejda
Aldent University, Faculty of Medical SciencesTirana, Albania