%0 Journal Article %A Hailat, Mohammad %T On a generalization of the friendship theorem %J Discussiones Mathematicae. Graph Theory %D 2012 %P 153-160 %V 32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2012_32_1_a12/ %G en %F DMGT_2012_32_1_a12