TY - JOUR AU - B. N. Petrov AU - R. A. Nelepin AU - B. M. Shamrikov TI - Construction of separatrix surfaces and stability regions in the phase spaces of nonlinear systems JO - Doklady Akademii Nauk PY - 1970 SP - 530 EP - 532 VL - 191 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1970_191_3_a7/ LA - ru ID - DAN_1970_191_3_a7 ER -