John, Fritz, <br/><br/>
Partial differential equations / 
Fritz John. 
 - 3rd ed. 
 - New York :  Springer-Verlag,  1978. 
 - ix, 198 p.\ages :  illustration ;  25 cm. 
 - Applied mathematical sciences ;  vol. 1 .
<br/><br/>Bibliography: p. 191-192 
<br/><br/><label>ISBN: </label>0387903275 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Partial