%0 Journal Article %A M. Kh. Gizatullin %T Affine surfaces which are quasihomogeneous with respect to an algebraic group %J Izvestiya. Mathematics %D 1971 %P 754-769 %V 5 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1971_5_4_a1/ %G en %F IM2_1971_5_4_a1