@article{IVM_2010_10_a3,
     author = {V. S. Mokeichev},
     title = {Explicit form of characteristic numbers of a~periodic problem},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {44--50},
     year = {2010},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2010_10_a3/}
}