%0 Journal Article %A Chalk, J.H.H. %T A Note on Coverings of En by Convex Sets %J Canadian mathematical bulletin %D 1967 %P 669-673 %V 10 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-067-4/ %R 10.4153/CMB-1967-067-4 %F 10_4153_CMB_1967_067_4