TY - JOUR AU - V. V. Kazakevich TI - Approximate integration of Rayleigh's equation with any nonlinearity JO - Doklady Akademii Nauk PY - 1967 SP - 291 EP - 294 VL - 177 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1967_177_2_a11/ LA - ru ID - DAN_1967_177_2_a11 ER -