?url_ver=Z39.88-2004&rft_id=MTMT%3A3240613&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=+%C4%8Covi%C4%87+Zlatko&rft.aufirst=Zlatko&rft.aulast=%C4%8Covi%C4%87&rft.isbn=9781509037186&rft.date=2016&rft.btitle=2016+International+Conference+on+Smart+Systems+and+Technologies+(SST)&rft.title=Usage+of+QR+Codes+in+Promotion+on+Social+Networks&rft.tpages=5&rft.genre=bookitem