TY - JOUR AU - Yu. E. Alenitsin TI - An estimation for the derivative in some classes of analytic functions in multuply-connected domain JO - Zapiski Nauchnykh Seminarov POMI PY - 1972 SP - 6 EP - 15 VL - 24 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1972_24_a1/ LA - ru ID - ZNSL_1972_24_a1 ER -