%0 Journal Article %A Shao, Changguo %A Jiang, Qinhui %T Finite groups whose set of numbers of subgroups of possible order has exactly 2 elements %J Czechoslovak Mathematical Journal %D 2014 %P 827-831 %V 64 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0135-4/ %R 10.1007/s10587-014-0135-4 %G en %F 10_1007_s10587_014_0135_4