Borwein, J.M & Vanderweff, J.D <br/><br/>
Convex functions  constructions, characterizations & counterexamples 
J.M. Borwein & J.D. Vanderweff 
 - Cambridge  CUP  2010 
 - x  521 
 - Encyclopedia of mathematics & its applications 109 .
<br/><br/><label>ISBN: </label>9780521850056