TY  - JOUR
AU  - Tutte, W. T.
TI  - Chromatic Sums for Rooted Planar Triangulations, IV: The Case λ = ∞
JO  - Canadian journal of mathematics
PY  - 1973
SP  - 929
EP  - 940
VL  - 25
IS  - 5
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-099-9/
DO  - 10.4153/CJM-1973-099-9
ID  - 10_4153_CJM_1973_099_9
ER  -