TY - JOUR AU - Yu. Kh. Khasanov AU - Y. F. Kasimova TI - On the relationship of a convolution type transformation and the best approximation of periodic functions JO - Matematičeskaâ fizika i kompʹûternoe modelirovanie PY - 2021 SP - 5 EP - 15 VL - 24 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VVGUM_2021_24_1_a0/ LA - ru ID - VVGUM_2021_24_1_a0 ER -