@misc{10_1017_S0008439500030393,
     title = {Twelfth {Biennial} {International} {Seminar} of the {Canadian} {Mathematical} {Congress}},
     journal = {Canadian mathematical bulletin},
     pages = {256--256},
     year = {1969},
     volume = {12},
     number = {2},
     doi = {10.1017/S0008439500030393},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500030393/}
}