%0 Journal Article %A Yu. E. Alenitsin %T An estimation for the derivative in some classes of analytic functions in multuply-connected domain %J Zapiski Nauchnykh Seminarov POMI %D 1972 %P 6-15 %V 24 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1972_24_a1/ %G ru %F ZNSL_1972_24_a1