@article{SJVM_2013_16_1_a6,
     author = {A. N. Pchelintsev},
     title = {On constructing the generally periodical solutions of a~complicated structure of a~non-autonomous system of differential equations},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {63--70},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2013_16_1_a6/}
}