%0 Journal Article %A G. D. Penev %A V. A. Yakubovich %T Certain problems in adaptive control %J Doklady Akademii Nauk %D 1971 %P 787-790 %V 198 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_198_4_a12/ %G ru %F DAN_1971_198_4_a12