Nagrath, I.J. <br/><br/>
Systems Modelling and Analysis 

 - 19th  
 - New Delhi  Tata McGraw Hill Publishing Company  2004 
 - 647p. 
<br/><br/><label>ISBN: </label>9780074517871 
<br/><br/><label>Dewey Class. No.: </label>004.21  / Nag-S