@article{ZNSL_2008_359_a6,
     author = {L. Yu. Kolotilina},
     title = {Inclusion sets for the singular values of a~square matrix},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {52--77},
     year = {2008},
     volume = {359},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2008_359_a6/}
}