KREYSZIG, Erwin. <br/><br/>
Introductory Functional Analysis with Applications 

 - New York.  John Wiley & Sons.  1978 
 - xiv, 688p. 
<br/><br/><label>ISBN: </label>0 471 03729 x 
<br/><br/><label>Dewey Class. No.: </label>515.7