Generalized concavity/ 
Mordecai Avriel ... [et al.]. 
 - New York:  Plenum Press,  c1988. 
 - x, 332 p.:  ill.;  24 cm. 
 - Mathematical concepts and methods in science and engineering,  36. .
<br/><br/>Includes bibliographies and indexes. 
<br/><br/><label>ISBN: </label>0306426560 
<br/><br/><label>LCCN: </label>87025799 
<br/><br/><label>Nat. Bib. No.: </label>GB88-43294 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Concave functions.
<br/><br/><label>Dewey Class. No.: </label>515  / G326