@article{DAN_1984_277_5_a18,
     author = {A. E. Lifshits},
     title = {The continuous spectrum in some problems of mathematical physics},
     journal = {Doklady Akademii Nauk},
     pages = {1105--1108},
     publisher = {mathdoc},
     volume = {277},
     number = {5},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_277_5_a18/}
}