Authors
Dragan Mandić
JU Ekonomska škola Banja Luka,, Banja Luka, Bosnia and Herzegovina
Zoran Borović
Faculty of Economics,University of Banja Luka,, Banja Luka, Bosnia and Herzegovinag
Mladen Jovićević
Maksima trejd d.o.o. Banja Luka,, Banja Luka, Bosnia and Herzegovina