@article{DE_2003_39_8_a7,
     author = {Ya. T. Sultanaev and E. V. Silova},
     title = {The {Spectral} {Asymptotics} of a {Quadratic} {Pencil} of {Differential} {Operators}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1062--1067},
     publisher = {mathdoc},
     volume = {39},
     number = {8},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2003_39_8_a7/}
}