Kato, Tosio. <br/><br/>
A Short Introduction to Perturbation Theory for Linear Operators /  

 - 1st ed /  
 - New York :   Springer-Verlag. 
 - p.161,xiii :  
<br/><br/><label>ISBN: </label>0-387-90666-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Peturbation
<br/><br/><label>Dewey Class. No.: </label>B9:75  / K2