@article{TM_2010_270_a21,
     author = {P. V. Chunaev},
     title = {On a~nontraditional method of approximation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {281--287},
     year = {2010},
     volume = {270},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2010_270_a21/}
}