TY  - JOUR
AU  - Arnfried Kemnitz
AU  - Margit Voigt
TI  - A note on complex-4-colorability of signed planar graphs
JO  - The electronic journal of combinatorics
PY  - 2021
VL  - 28
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.37236/9844/
DO  - 10.37236/9844
ID  - 10_37236_9844
ER  -