@article{VMJ_2006_8_3_a4,
     author = {Yu. Kh. \`Eshkabilov},
     title = {On the spectral properties of operators in the {Friedrichs} model with a noncompact kernel in the space of functions of two variables},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {53--67},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2006_8_3_a4/}
}