TY - JOUR AU - A. L. Štaras TI - The averaging method for weakly nonlinear equations JO - Doklady Akademii Nauk PY - 1988 SP - 1345 EP - 1348 VL - 298 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1988_298_6_a14/ LA - ru ID - DAN_1988_298_6_a14 ER -