Kato, Tosio  <br/><br/>
Perturbation Theory For Linear Operators / 
Tosio Kato 
 - New York:  Springer,  1995. 
 - 619p 
<br/><br/><label>ISBN: </label>9783540586616 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathe Matics
<br/><br/><label>Dewey Class. No.: </label>515.7246  / KAT/P