TY  - JOUR
TI  - A Colloquium on Graph Theory
JO  - Canadian mathematical bulletin
PY  - 1960
SP  - 102
EP  - 103
VL  - 3
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500025418/
DO  - 10.1017/S0008439500025418
ID  - 10_1017_S0008439500025418
ER  -