Author(s):
1. Maja Mijajlovik, University “Goce Delčev”, Štip, Faculty of Technology, Macedonia
2. Svetlana Risteska, University of St.Kliment Ohridski Bitola, Faculty of Economics - Prilep, Macedonia
3. Vineta Srebrenkoska, University “Goce Delčev”, Štip, Faculty of Technology, Macedonia
4. Biljana Kostadinoska, University of St.Kliment Ohridski Bitola, Faculty of Economics - Prilep, Macedonia
5. Julija Gogu, University of St.Kliment Ohridski Bitola, Faculty of Economics - Prilep, Macedonia