Reddy, B. D <br/><br/>
Introductory Functional Analysis: With applications to Boundary Value Problems and Finite Elements 

 - New York  Springer Verlag  1997 
 - xiv, 471p. 
 - Texts in Applied Mathematics no. 27 .
<br/><br/><label>ISBN: </label>978-0-387-98307-3