%0 Journal Article
%A Ljubica Diković
%A Dušan Stefanović
%T The math portals
%J Kragujevac Journal of Mathematics
%D 2007
%P 89 
%V 30
%I mathdoc
%U http://geodesic.mathdoc.fr/item/KJM_2007_30_a5/
%G en
%F KJM_2007_30_a5