%0 Journal Article %T A Short Proof of Euler’s Relation for Convex Polytopes %J Canadian mathematical bulletin %D 1997 %P 471-474 %V 40 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1997-056-4/ %R 10.4153/CMB-1997-056-4 %F 10_4153_CMB_1997_056_4