Partial differential equations/ 
Edited by Joself Wiener and Jack k Hale 
 - New york:  Longman Group UK Limited  1992 
 - 268pg.ills. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>582091144 
<br/><br/><label>LC Class. No.: </label>QA370.p36