%0 Journal Article %A Gravner, Janko %A Griffeath, David %T Modeling snow crystal growth. I: Rigorous results for Packard's digital snowflakes. %J Experimental mathematics %D 2006 %P 421-444 %V 15 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/EXMA_2006__15_4_232102/ %G en %F EXMA_2006__15_4_232102