TY - JOUR AU - V. V. Zhuk TI - On strong approximation of functions by positive operators JO - Zapiski Nauchnykh Seminarov POMI PY - 2015 SP - 68 EP - 80 VL - 440 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_2015_440_a5/ LA - ru ID - ZNSL_2015_440_a5 ER -