@misc{10_1017_S0008439500029866,
     title = {Ontario {Mathematical} {Meetings} 1968},
     journal = {Canadian mathematical bulletin},
     pages = {621--652},
     year = {1968},
     volume = {11},
     number = {4},
     doi = {10.1017/S0008439500029866},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500029866/}
}