Numerical Solution of Partial Differential Equations/  finite difference methods 
Smith,G. D. 
 - 3 
 - New Delhi:  Oxford University Press, USA,  1985. 
 - 350 
<br/><br/><label>ISBN: </label>0198596502 
<br/><br/><label>Dewey Class. No.: </label>515.35  / SMI/N