@article{MZM_1974_15_6_a9,
     author = {Yu. Sh. Abramov},
     title = {On a~class of nonlinear problems on characteristic values},
     journal = {Matemati\v{c}eskie zametki},
     pages = {907--913},
     publisher = {mathdoc},
     volume = {15},
     number = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_6_a9/}
}