%0 Journal Article %A Miloš Piščević %A Dejan Simić %T Reducing E-Commerce Risks Using Digital Certificates %J Yugoslav journal of operations research %D 2009 %P 185 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2009_19_1_a13/ %G en %F YJOR_2009_19_1_a13