@article{DE_1991_27_7_a5,
     author = {R. Z. Dautov and A. D. Lyashko and S. I. Solov'ev},
     title = {Convergence of the {Bubnov--Galerkin} method with perturbations for symmetric spectral problems with nonlinear appearance of the parameter},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1144--1153},
     publisher = {mathdoc},
     volume = {27},
     number = {7},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_7_a5/}
}