%0 Journal Article %A Gräbe, Hans-Gert %T Two remarks on independent sets %J Journal of Algebraic Combinatorics %D 1993 %P 137-145 %V 2 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_1993__2_2_a3/ %G en %F JAC_1993__2_2_a3