@article{ZNSL_1985_141_a11,
     author = {J. B. Farforovskaja},
     title = {Lipschitz functions of self-adjoint operators in perturbation theory},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {176--182},
     publisher = {mathdoc},
     volume = {141},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_141_a11/}
}