@article{ZVMMF_1963_3_2_a13,
     author = {A. A. Abramov and V. B. Andreev},
     title = {On the application of the method of successive substitution to the determination of periodic solutions of differential and difference equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {377--381},
     year = {1963},
     volume = {3},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1963_3_2_a13/}
}