%0 Journal Article
%A J. Amjadi
%T An upper bound on the double domination number of trees
%J Kragujevac Journal of Mathematics
%D 2015
%P 133 
%V 39
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/KJM_2015_39_2_a1/
%G en
%F KJM_2015_39_2_a1