@article{ZVMMF_2007_47_4_a5,
     author = {A. A. Abramov and V. I. Ul'yanova and L. F. Yukhno},
     title = {On certain properties of a~nonlinear eigenvalue problem for {Hamiltonian} systems of ordinary differential equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {638--645},
     publisher = {mathdoc},
     volume = {47},
     number = {4},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2007_47_4_a5/}
}