%0 Journal Article %T Abstracts of Theses %J Canadian mathematical bulletin %D 1967 %P 631-634 %V 10 %N 4 %U http://geodesic.mathdoc.fr/articles/10.1017/S0008439500028770/ %R 10.1017/S0008439500028770 %F 10_1017_S0008439500028770