Kreyszig, Erwin. <br/><br/>
Introductory functional analysis with applications / 
Erwin Kreyszig. 
 - New York :  Wiley,  c1978. 
 - xiv, 688 p. ;  23 cm. 
 - Wiley classics library. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0471504599 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functional analysis.