%0 Journal Article %A Robillard, Pierre %T Lower Bounds for the Ramsey Numbers %J Canadian mathematical bulletin %D 1970 %P 227-229 %V 13 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-046-0/ %R 10.4153/CMB-1970-046-0 %F 10_4153_CMB_1970_046_0