@article{MT_2011_14_1_a7,
     author = {Yu. Kh. Eshkabilov},
     title = {On infinity of the discrete spectrum of operators in the {Friedrichs} model},
     journal = {Matemati\v{c}eskie trudy},
     pages = {195--211},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2011_14_1_a7/}
}