Nagrath, I. J. and Gopal, M.  <br/><br/>
Systems modelling and analysis 

 -  Tata McGraw-Hill Publishing Company Ltd., New Delhi  1993 
 - xii, 647 
<br/><br/><label>ISBN: </label>0074517872, 
<br/><br/><label>Dewey Class. No.: </label>Column-17