TY  - JOUR
AU  - Wormald, Nicholas C.
TI  - On the Tumber of Planar Maps
JO  - Canadian journal of mathematics
PY  - 1981
SP  - 1
EP  - 11
VL  - 33
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-001-6/
DO  - 10.4153/CJM-1981-001-6
ID  - 10_4153_CJM_1981_001_6
ER  -