Kreyszig, Erwin. <br/><br/>
Introductory functional analysis with applications / 
Erwin Kreyszig. 
 - New York :  John Wiley & Sons,  1978. 
 - 688 p. :  ill. ;  23 cm. 
<br/><br/> Includes indexes. 
<br/><br/><label>ISBN: </label>0471507318 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functional analysis.