Deutsch, F <br/><br/>
Best approximation in inner product spaces 
Frank Deutsch 
 - Berlin  Springer  c2001 
 - xv, 338 p. ; 25 cm. 
<br/><br/> Includes bibliographical references (p. [315]-330) and index 
<br/><br/><label>ISBN: </label>9780387951560 
<br/><br/><label>ISSN: </label>47092 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Approximation theory<br/>Inner product spaces
<br/><br/><label>Dewey Class. No.: </label>515/.733 DEU