%0 Journal Article
%A Tutte, W. T.
%T Chromatic Sums for Rooted Planar Triangulations II: The Case λ = τ + 1
%J Canadian journal of mathematics
%D 1973
%P 657-671
%V 25
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-066-8/
%R 10.4153/CJM-1973-066-8
%F 10_4153_CJM_1973_066_8