TY - JOUR AU - A. G. Vitushkin TI - On Hilbert's thirteenth problem and related questions JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2004 SP - 11 EP - 25 VL - 59 IS - 1 UR - http://geodesic.mathdoc.fr/item/RM_2004_59_1_a2/ LA - en ID - RM_2004_59_1_a2 ER -