%0 Journal Article %A Radenski, Atanas %T Patterns for Active E-Learning in CMS Environments %J Serdica Journal of Computing %D 2008 %P 277-294 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJC_2008_2_3_a5/ %G en %F SJC_2008_2_3_a5