%0 Journal Article %A A. Yu. Solynin %T The boundary distortion and extremal problems in certain classes of univalent functions %J Zapiski Nauchnykh Seminarov POMI %D 1993 %P 115-142 %V 204 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1993_204_a8/ %G ru %F ZNSL_1993_204_a8