@article{10_4153_CMB_1958_010_2,
     author = {Wyman, M.},
     title = {Restricted {Partitions} of {Finite} {Sets}},
     journal = {Canadian mathematical bulletin},
     pages = {87--96},
     year = {1958},
     volume = {1},
     number = {2},
     doi = {10.4153/CMB-1958-010-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1958-010-2/}
}