@article{IVM_2006_6_a3,
     author = {V. B. Levenshtam and G. L. Khatlamadzhiyan},
     title = {Extension of averaging theory to differential equations containing rapidly oscillating terms with large amplitudes. {The} problem of periodic solutions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {35--47},
     publisher = {mathdoc},
     number = {6},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2006_6_a3/}
}