Kreyszig,E <br/><br/>
Introductory Functional Analysis With Applications  [Book]. 

 -  John Wiley 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>9971513811 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Introductory Functional Analysis With Applications