Ortega, James M. <br/><br/>
Introductionto numerical methods for differential equations   
by James M.Ortega, William G.Poole 
 - Massachusetts  Pitman  1981 
 - ix, 329p. 
<br/><br/><label>ISBN: </label>0 273 01686 5 
<br/><br/><label>Dewey Class. No.: </label>515.35  / N813