@article{RM_1998_53_2_a16,
     author = {S. V. Savchenko},
     title = {Stability of the upper bound of a~spectrum under perturbations by diagonal matrices  for a~class of self-adjoint operators},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {406--407},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1998_53_2_a16/}
}