@article{IVM_1960_3_a28,
     author = {N. V. Sharkova},
     title = {Approximate solution by the oscillating function method of differential equations with lagging argument},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {256--260},
     publisher = {mathdoc},
     number = {3},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1960_3_a28/}
}