%0 Journal Article %A Dragan Milićev %T Towards Understanding of Classes versus Data Types in Conceptual Modeling and UML %J Computer Science and Information Systems %D 2012 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CSIS_2012_9_2_a3/ %F CSIS_2012_9_2_a3