TY - JOUR AU - N. M. Dobrovol'skii TI - An~effective proof of Roth's theorem on quadratic dispersion JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1984 SP - 117 EP - 118 VL - 39 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1984_39_4_a6/ LA - en ID - RM_1984_39_4_a6 ER -