Saxena,H.C. <br/><br/>
Finite Differences and Numerical Analysis 

 - 15th ed. 
 - New Delhi:  S.Chand. 
 - 452. 
<br/><br/><label>ISBN: </label>81-219-0339-4 
<br/><br/><label>Dewey Class. No.: </label> / SAX