%0 Journal Article %A Ernst S. SELMER %T Sufficient congruence conditions for the existence of rational points on certain cubic surfaces %J Mathematica Scandinavica %D 1953 %P 113-119 %V 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1953__1_165492/ %F MS2_1953__1_165492