Gilʹ, M. I <br/><br/>
Operator functions and localization of spectra 
Michael I. Gil' 
 - Berlin ; New York  Springer-Verlag  2003 
 - xiv, 256 p. : ill. ; 24 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9783540202462 
<br/><br/><label>ISSN: </label>2003066697 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linear operators<br/>Operator theory<br/>Perturbation (Mathematics)<br/>Resolvents (Mathematics)<br/>Spectral theory (Mathematics)
<br/><br/><label>Dewey Class. No.: </label>510 GIL