%0 Journal Article %A F. K. Kabdikairov %T On relations in the two-dimensional Cremona group over a nonclosed field %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1991 %P 16-21 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1991_3_a3/ %G ru %F VMUMM_1991_3_a3