@article{DE_2002_38_4_a4,
     author = {V. A. Sadovnichii and V. V. Dubrovskii and E. M. Maleko and A. Yu. Popov},
     title = {Correctness of {Dorodnitsyn's} {Method} for {Approximate} {Calculation} of {Eigenvalues} in a {Class} of {Boundary} {Value} {Problems}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {471--476},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_4_a4/}
}