%0 Journal Article %A Vito Geramita, Anthony %A Harbourne, Brian %A Migliore, Juan %T Classifying Hilbert functions of fat point subschemes in P^2. %J Collectanea mathematica %D 2009 %P 159-192 %V 60 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CLTM_2009_2009_1_a12/ %G en %F CLTM_2009_2009_1_a12