Smith, G D <br/><br/>
Numerical solution of partial differential equations: Finite difference methods 

 - 2nd ed. 
 - Oxford  Clarendon Press  1978 
 - xii, 304 p. 
<br/><br/><label>ISBN: </label> PON5.5 
<br/><br/><label>Dewey Class. No.: </label>515.353 S57N