@misc{10_1017_S0008439500028447,
     title = {Problems for {Solution}},
     journal = {Canadian mathematical bulletin},
     pages = {604--605},
     year = {1967},
     volume = {10},
     number = {4},
     doi = {10.1017/S0008439500028447},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500028447/}
}