Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1982__23_3_a10, author = {Berman, David M.}, title = {A note on choosability in planar graphs}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {537--540}, publisher = {mathdoc}, volume = {23}, number = {3}, year = {1982}, mrnumber = {677861}, zbl = {0505.05029}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1982__23_3_a10/} }
Berman, David M. A note on choosability in planar graphs. Commentationes Mathematicae Universitatis Carolinae, Tome 23 (1982) no. 3, pp. 537-540. http://geodesic.mathdoc.fr/item/CMUC_1982__23_3_a10/