%0 Journal Article %A Berman, David M. %T A note on choosability in planar graphs %J Commentationes Mathematicae Universitatis Carolinae %D 1982 %P 537-540 %V 23 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1982__23_3_a10/ %G en %F CMUC_1982__23_3_a10