%0 Journal Article %A I. V. Arzhantsev %T On $\operatorname{SL}_2$-actions of complexity one %J Izvestiya. Mathematics %D 1997 %P 685-698 %V 61 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1997_61_4_a0/ %G en %F IM2_1997_61_4_a0