@article{DAN_1980_255_5_a14,
     author = {M. Sh. Birman and D. R. Yafaev},
     title = {Asymptotics of the spectrum of the $S$-matrix in potential scattering},
     journal = {Doklady Akademii Nauk},
     pages = {1085--1087},
     publisher = {mathdoc},
     volume = {255},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_255_5_a14/}
}