@article{ZNSL_1987_159_a2,
     author = {V. N. Simonova},
     title = {Solution of the partial eigenvalue problem for a regular matrix pencil},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {33--39},
     publisher = {mathdoc},
     volume = {159},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_159_a2/}
}