%0 Journal Article %A Lu, You %A Hou, Xinmin %A Xu, Jun-Ming %T On the (2,2)-domination number of trees %J Discussiones Mathematicae. Graph Theory %D 2010 %P 185-199 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2010_30_2_a0/ %G en %F DMGT_2010_30_2_a0