%0 Journal Article %A D. I. Panyushev %T Semisimple automorphism groups of four-dimensional affine space %J Izvestiya. Mathematics %D 1984 %P 171-183 %V 23 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1984_23_1_a4/ %G en %F IM2_1984_23_1_a4