Baumgärtel, Hellmut <br/><br/>
Analytic perturbation theory for matrices and operators/ 
H. Baumgärtel. 
 - Basel ;  Boston:  Birkhäuser,  1985, c1984. 
 - 427 p. ;  25 cm. 
 - Operator theory, advances and applications ;  vol. 15. .
 - Operator theory, advances and applications.  v. 15. .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [415]-423. 
<br/><br/><label>ISBN: </label>3764316640 
<br/><br/><label>LCCN: </label>84028301 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Matrices.<br/>Linear operators.<br/>Perturbation (Mathematics)
<br/><br/><label>Dewey Class. No.: </label>512.9434  / B348a