Gilbarg , David <br/><br/>
Elliptic partial differential equations of second order 
David Gilbarg 
 - 2nd.ed. 
 - Berlin  Springer  1998 
 - xiii, 517p 
 - Grundlehrender mathematischen Wissens Choften  224 .
<br/><br/><label>ISBN: </label>354013025x  3974.88 
<br/><br/><label>Dewey Class. No.: </label>515.35 G372E