@article{AA_2003_15_1_a7,
     author = {S. Yakovlev},
     title = {Uniqueness theorem and singular spectrum in the {Friedrichs} model near a~singular point},
     journal = {Algebra i analiz},
     pages = {215--239},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2003_15_1_a7/}
}