PHILLIPS, Don T. RAVINDRAN, A. SOLBERG, James J. <br/><br/>
OPERATIONS RESEARCH : PRINCIPLES AND PRACTICE 

 - New York  John Wiley and Sons Inc., New York   2001 
<br/><br/><label>ISBN: </label>9971 1 302 1 
<br/><br/><label>Dewey Class. No.: </label>001.424  / RAV/OP