TY  - JOUR
AU  - L. S. Mel'nikov
TI  - The chromatic class and the location of a graph on a closed surface
JO  - Matematičeskie zametki
PY  - 1970
SP  - 671
EP  - 682
VL  - 7
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1970_7_6_a1/
LA  - ru
ID  - MZM_1970_7_6_a1
ER  -