@article{DAN_1982_266_5_a7,
     author = {V. A. Mikhailets},
     title = {Asymptotics of the spectrum of elliptic operators and boundary conditions},
     journal = {Doklady Akademii Nauk},
     pages = {1059--1062},
     publisher = {mathdoc},
     volume = {266},
     number = {5},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_266_5_a7/}
}