Chawla, K.K.. <br/><br/>
Operations research 

 - 2nd ed. 
 - Ludhiana  Kalyani publisher  2018 
 - 534 p. 
<br/><br/><label>ISBN: </label>9789327290721 
<br/><br/><label>Dewey Class. No.: </label>001.43 C43O