@article{MMO_1980_41_a7,
     author = {L. F. Fridlender},
     title = {Certain spectral properties of very weak nonselfadjoint perturbations of selfadjoint operators},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {181--216},
     publisher = {mathdoc},
     volume = {41},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1980_41_a7/}
}