@article{MM_2005_17_6_a3,
     author = {A. N. Prokopenya},
     title = {Normalization of the non-autonomic linear {Hamiltonian} system with a small parameter},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {33--42},
     publisher = {mathdoc},
     volume = {17},
     number = {6},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2005_17_6_a3/}
}