%0 Journal Article %A N. M. Dobrovol'skii %T An~effective proof of Roth's theorem on quadratic dispersion %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1984 %P 117-118 %V 39 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1984_39_4_a6/ %G en %F RM_1984_39_4_a6