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@article{FAA_1977_11_1_a4, author = {V. I. Feigin}, title = {The continuous spectrum of differential operators}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {43--54}, publisher = {mathdoc}, volume = {11}, number = {1}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1977_11_1_a4/} }
V. I. Feigin. The continuous spectrum of differential operators. Funkcionalʹnyj analiz i ego priloženiâ, Tome 11 (1977) no. 1, pp. 43-54. http://geodesic.mathdoc.fr/item/FAA_1977_11_1_a4/