@article{ZNSL_1982_115_a17,
     author = {B. S. Pavlov and M. D. Faddeev},
     title = {Spectral analysis of unitary perturbations of contractions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {215--227},
     publisher = {mathdoc},
     volume = {115},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1982_115_a17/}
}