TY  - JOUR
AU  - Song, Lili
AU  - Sun, Lei
TI  - 1-planar graphs with girth at least 6 are (1,1,1,1)-colorable
JO  - Czechoslovak Mathematical Journal
PY  - 2023
SP  - 993
EP  - 1006
VL  - 73
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2023.0418-21/
DO  - 10.21136/CMJ.2023.0418-21
LA  - en
ID  - 10_21136_CMJ_2023_0418_21
ER  -