@article{IVM_1979_8_a1,
     author = {M. I. Gil'},
     title = {Estimates of the norm of a~function of {a~Hilbert--Schmidt} operator},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {14--19},
     publisher = {mathdoc},
     number = {8},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1979_8_a1/}
}