%0 Journal Article %A A. S. Bratus' %T Asymptotic solutions in problems of the optimal control of the coefficients of elliptic operators %J Doklady Akademii Nauk %D 1981 %P 1035-1038 %V 259 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_259_5_a1/ %G ru %F DAN_1981_259_5_a1