@article{DAN_1996_351_3_a1,
     author = {O. G. Gaidamak and Ya. T. Sultanaev},
     title = {Asymptotics of the spectrum of a quadratic pencil of differential},
     journal = {Doklady Akademii Nauk},
     pages = {297--298},
     publisher = {mathdoc},
     volume = {351},
     number = {3},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_351_3_a1/}
}