%0 Journal Article %A V. Ya. Katkovnik %A V. E. Kheisin %T A universal residual function for solving conditional extremum problems %J Doklady Akademii Nauk %D 1980 %P 804-806 %V 253 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_253_4_a6/ %G ru %F DAN_1980_253_4_a6