@article{DAN_1973_212_1_a0,
     author = {Yu. Sh. Abramov},
     title = {On the theory of nonlinear eigenvalue problems},
     journal = {Doklady Akademii Nauk},
     pages = {11--14},
     publisher = {mathdoc},
     volume = {212},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_1_a0/}
}