@misc{10_1017_S0008439500025418,
     title = {A {Colloquium} on {Graph} {Theory}},
     journal = {Canadian mathematical bulletin},
     pages = {102--103},
     year = {1960},
     volume = {3},
     number = {2},
     doi = {10.1017/S0008439500025418},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500025418/}
}