TY - JOUR AU - Chvátal, Václav TI - Some relations among invariants of graphs JO - Czechoslovak Mathematical Journal PY - 1971 SP - 366 EP - 368 VL - 21 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101034/ DO - 10.21136/CMJ.1971.101034 LA - en ID - 10_21136_CMJ_1971_101034 ER -