TY - JOUR AU - V. B. Levenshtam AU - G. L. Khatlamadzhiyan TI - Extension of averaging theory to differential equations containing rapidly oscillating terms with large amplitudes. The problem of periodic solutions JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2006 SP - 35 EP - 47 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2006_6_a3/ LA - ru ID - IVM_2006_6_a3 ER -