@article{DAN_1957_112_2_a0,
     author = {I. I. Blehman},
     title = {On the stability of periodical solutions of quasilinear autonomous systems with many degrees of freedom},
     journal = {Doklady Akademii Nauk},
     pages = {183--186},
     publisher = {mathdoc},
     volume = {112},
     number = {2},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_2_a0/}
}