TY - JOUR AU - A. Yu. Kolesov AU - Yu. S. Kolesov TI - The Bogolyubov--Mitropol'skii reduction principle in the problem of parametric excitation of autowaves JO - Doklady Akademii Nauk PY - 1989 SP - 837 EP - 840 VL - 307 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1989_307_4_a15/ LA - ru ID - DAN_1989_307_4_a15 ER -