TY  - JOUR
AU  - Margit Voigt
AU  - Arnfried Kemnitz
TI  - A note on not-4-list colorable planar graphs
JO  - The electronic journal of combinatorics
PY  - 2018
VL  - 25
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.37236/7320/
DO  - 10.37236/7320
ID  - 10_37236_7320
ER  -