@article{10_4153_CMB_1984_061_3,
     author = {Watson, W. Stephen},
     title = {Separating {Points} and {Coloring} {Principles}},
     journal = {Canadian mathematical bulletin},
     pages = {398--404},
     year = {1984},
     volume = {27},
     number = {4},
     doi = {10.4153/CMB-1984-061-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1984-061-3/}
}