@article{AA_1998_10_4_a8,
     author = {S. I. Yakovlev},
     title = {A~finiteness bound for the singular spectrum in a~neighborhood of a~singular point of operators of the {Friedrichs} model},
     journal = {Algebra i analiz},
     pages = {210--237},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1998_10_4_a8/}
}