Computational partial differential equations : 
Langtangen, Hans Petter, 
 - Berlin ; | New York :  Springer,  1999 
 - xxiii, 682 p. :  ill. ;  25 cm. 
 - Lecture notes in computational science and engineering ;  2 .
<br/><br/><label>ISBN: </label>3540652744 (acid-free paper)