@misc{10_1017_S0008439500027594,
     title = {Openings in {Mathematics}},
     journal = {Canadian mathematical bulletin},
     pages = {141--142},
     year = {1966},
     volume = {9},
     number = {1},
     doi = {10.1017/S0008439500027594},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500027594/}
}