@article{DAN_1986_286_5_a3,
     author = {D. G. Vasil'ev},
     title = {Two-term asymptotic behavior of the spectrum of a boundary value},
     journal = {Doklady Akademii Nauk},
     pages = {1043--1046},
     publisher = {mathdoc},
     volume = {286},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_286_5_a3/}
}