@article{ZVMMF_2008_48_7_a5,
     author = {A. A. Abramov and V. I. Ul'yanova and L. F. Yukhno},
     title = {On the self-adjoint nonlinear eigenvalue problem for {Hamiltonian} systems of ordinary differential equations with singularities},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1202--1208},
     publisher = {mathdoc},
     volume = {48},
     number = {7},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2008_48_7_a5/}
}