@misc{10_1017_S0008439500026138,
     title = {Solution},
     journal = {Canadian mathematical bulletin},
     pages = {196--200},
     year = {1962},
     volume = {5},
     number = {2},
     doi = {10.1017/S0008439500026138},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500026138/}
}