%0 Journal Article %A Poschen, Michael %A Volkmann, Lutz %T A lower bound for the irredundance number of trees %J Discussiones Mathematicae. Graph Theory %D 2006 %P 209-215 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2006_26_2_a2/ %G en %F DMGT_2006_26_2_a2