@article{IVM_1990_8_a0,
     author = {G. M. Vartanyan},
     title = {On a~resonance theorem},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--13},
     year = {1990},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1990_8_a0/}
}