TY - JOUR AU - V. M. Tikhomirov TI - The $\varepsilon$-entropy of certain classes of periodic functions JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1962 VL - 17 IS - 6 UR - http://geodesic.mathdoc.fr/item/RM_1962_17_6_a9/ LA - ru ID - RM_1962_17_6_a9 ER -