@article{eb78426dbc014abead3d5efdc5ef346a,
title = "Perturbations of isolated part of definite spectrum for G-selfadjoint operators and selfadjoint operator polynomials",
keywords = "MSC 1991: 47A56, 47B50, 47A55",
author = "I. Feldman and A. Markus and V. Matsaev",
year = "1995",
month = dec,
day = "1",
doi = "10.1007/BF01203916",
language = "English",
volume = "23",
pages = "435--440",
journal = "Integral Equations and Operator Theory",
issn = "0378-620X",
publisher = "Birkhauser Verlag Basel",
number = "4",
}