@article{10_4153_CMB_1964_016_9,
     author = {Abbott, H. L. and Moser, L.},
     title = {On a {Combinatorial} {Problem} of {Erd\"os} and {Hajnal}},
     journal = {Canadian mathematical bulletin},
     pages = {177--181},
     year = {1964},
     volume = {7},
     number = {2},
     doi = {10.4153/CMB-1964-016-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1964-016-9/}
}