Bela Riesz, Frigyes. <br/><br/>
Functional analysis   
by Frigyes Riesz, Bela Sz-Nagy 
 - New York  Fredric Ungar Publishing Company  1955 
 - xii, 467p. 
<br/><br/><label>LCCN: </label>55-8437 
<br/><br/><label>Dewey Class. No.: </label>515.7  / N55