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

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