TY - JOUR AU - M. M. Khapaev TI - Investigation of stability in the theory of nonlinear oscillations JO - Matematičeskie zametki PY - 1968 SP - 307 EP - 318 VL - 3 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1968_3_3_a9/ LA - ru ID - MZM_1968_3_3_a9 ER -