%0 Journal Article %A Abbott, H. L. %T An Application of Ramsay's Theorem to a Problem of Erdos and Hajnal %J Canadian mathematical bulletin %D 1965 %P 515-517 %V 8 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-038-1/ %R 10.4153/CMB-1965-038-1 %F 10_4153_CMB_1965_038_1