%0 Journal Article %A Gil', Michael %T Perturbations of real parts of eigenvalues of bounded linear operators in a Hilbert space %J Czechoslovak Mathematical Journal %D 2024 %P 567-573 %V 74 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2024.0468-23/ %R 10.21136/CMJ.2024.0468-23 %G en %F 10_21136_CMJ_2024_0468_23