@article{TMF_1986_68_2_a7,
     author = {A. A. Kvitsinskiy},
     title = {Analog of {Levinson's} formula for {a~Schr\"odinger} operator with long-range potential},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {244--254},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1986_68_2_a7/}
}