%0 Journal Article %A A. Yu. Vasiliev %T The optimal control method in an extremal problem in a class of solutions of the L\"owner--Kufarev equation %J Differencialʹnye uravneniâ %D 1990 %P 386-392 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1990_26_3_a3/ %G ru %F DE_1990_26_3_a3