Voir la notice de l'article provenant de la source Math-Net.Ru
@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/} }
A. E. Lifshits. The continuous spectrum in some problems of mathematical physics. Doklady Akademii Nauk, Tome 277 (1984) no. 5, pp. 1105-1108. http://geodesic.mathdoc.fr/item/DAN_1984_277_5_a18/