TY  - JOUR
AU  - Berman, David M.
TI  - A note on choosability in planar graphs
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1982
SP  - 537
EP  - 540
VL  - 23
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1982__23_3_a10/
LA  - en
ID  - CMUC_1982__23_3_a10
ER  -