@article{10_4153_CMB_1969_040_1,
     author = {Chv\'atal, V.},
     title = {On {Finite} {Polarized} {Partition} {Relations}},
     journal = {Canadian mathematical bulletin},
     pages = {321--326},
     year = {1969},
     volume = {12},
     number = {3},
     doi = {10.4153/CMB-1969-040-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-040-1/}
}