TY - JOUR AU - P. I. Lizorkin TI - Operators connected with fractional differentiation, and classes of differentiable functions JO - Informatics and Automation PY - 1972 SP - 212 EP - 243 VL - 117 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1972_117_a11/ LA - ru ID - TRSPY_1972_117_a11 ER -