TY - JOUR AU - V. A. Iskovskikh AU - S. L. Tregub TI - Relations in the two-dimensional Cremona group over a~nonclosed field JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1994 SP - 123 EP - 152 VL - 207 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1994_207_a10/ LA - ru ID - TM_1994_207_a10 ER -