%0 Journal Article %A V. A. Iskovskikh %T Proof of a~theorem on relations in the two-dimensional Cremona group %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1985 %P 231-232 %V 40 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1985_40_5_a7/ %G en %F RM_1985_40_5_a7