@article{10_1017_S0008439500027946,
     author = {Davis, C. and Halperin, I.},
     title = {Invitation to {Canadians} who are {Studying} {Mathematics} {Outside} {Canada}},
     journal = {Canadian mathematical bulletin},
     pages = {170--170},
     year = {1967},
     volume = {10},
     number = {1},
     doi = {10.1017/S0008439500027946},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500027946/}
}