@article{10_4153_CMB_1965_042_4,
     author = {Abramson, M.},
     title = {Restricted {Choices}},
     journal = {Canadian mathematical bulletin},
     pages = {585--600},
     year = {1965},
     volume = {8},
     number = {5},
     doi = {10.4153/CMB-1965-042-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-042-4/}
}