Nagrath, IJ. <br/><br/>
Systems: modelling and analysis 

 - Delhi: Tata McGraw-Hill  1986 
 - xii,647p.  22 cm. 
<br/><br/><label>ISBN: </label>0074517872 
<br/><br/><label>Dewey Class. No.: </label>511.8  / , nag