Wayne Roberts, A. <br/><br/>
Covex functions   
by A. Wayne Roberts, Dale E. Varberg 
 - New York  Academic Press  1973 
 - xx, 300p. 
 - Pure and Applied Mathematics .
<br/><br/><label>ISBN: </label>0125897405 
<br/><br/><label>Dewey Class. No.: </label>515.88  / N73