%0 Journal Article %A Sauer, N. %T Extremal Point and Edge Sets in n-Graphs %J Canadian journal of mathematics %D 1969 %P 1069-1075 %V 21 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-118-3/ %R 10.4153/CJM-1969-118-3 %F 10_4153_CJM_1969_118_3