TY  - JOUR
AU  - O. V. Borodin
TI  - Joint generalization of the theorems of Lebesgue and Kotzig on the combinatorics of planar maps
JO  - Diskretnaya Matematika
PY  - 1991
SP  - 24
EP  - 27
VL  - 3
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DM_1991_3_4_a3/
LA  - ru
ID  - DM_1991_3_4_a3
ER  -