@article{SVMO_2016_18_3_a2,
     author = {N. V. Kovalev},
     title = {Straightforward expansion of non-autonomous integrals for quasi-conservative systems with one degree of freedom},
     journal = {\v{Z}urnal Srednevol\v{z}skogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {32--40},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SVMO_2016_18_3_a2/}
}