@article{ZVMMF_2015_55_4_a7,
     author = {A. A. Abramov and L. F. Yukhno},
     title = {A nonlinear singular eigenvalue problem for a {Hamiltonian} system of~differential equations with redundant condition},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {599--609},
     publisher = {mathdoc},
     volume = {55},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_4_a7/}
}