%0 Journal Article %A Mendelsohn, N. S. %T A Theorem on Steiner Systems %J Canadian journal of mathematics %D 1970 %P 1010-1015 %V 22 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-117-0/ %R 10.4153/CJM-1970-117-0 %F 10_4153_CJM_1970_117_0