TY - JOUR TI - A Short Proof of Euler’s Relation for Convex Polytopes JO - Canadian mathematical bulletin PY - 1997 SP - 471 EP - 474 VL - 40 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1997-056-4/ DO - 10.4153/CMB-1997-056-4 ID - 10_4153_CMB_1997_056_4 ER -