Chen, Ya-Zhe <br/><br/>
Second order elliptic equations and elliptic systems   
by Ya-Zhe Chen and Lan-Cheng Wu 
 - Providence  American Mathematical Society  1998 
 - xi, 246p. 
 - Translations of mathematical monographs  Vol.174 .
<br/><br/><label>ISBN: </label>0821809709 
<br/><br/><label>Dewey Class. No.: </label>515.353  / N9812