Debnath, Lokenath. <br/><br/>
Introduction to Hilbert spaces with applications / 
Lokenath Debnath, Piotr Mikusiński. 
 - 3rd 
 - Amsterdam  Elsevier Academic Press  2005 
 - xviii, 580 
<br/><br/><label>ISBN: </label>9788131201794 
<br/><br/><label>LC Class. No.: </label>QA322.4 
<br/><br/><label>Dewey Class. No.: </label>515/.733