%0 Journal Article %A Eames, W. %T On Strong Upper Densities %J Canadian mathematical bulletin %D 1969 %P 509-510 %V 12 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-066-8/ %R 10.4153/CMB-1969-066-8 %F 10_4153_CMB_1969_066_8