TY - JOUR AU - V. A. Pelykh TI - Correctness of the Country problem statement for a system of Einstein equations, coordinate conditions and the theory of reference systems JO - Doklady Akademii Nauk PY - 1979 SP - 590 EP - 593 VL - 247 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1979_247_3_a19/ LA - ru ID - DAN_1979_247_3_a19 ER -