Methods for analysis of nonlinear elliptic boundary value problems  
Skrypnik, I. V. 
 - Providence, R.I. :  American Mathematical Society,  1994 
 - xi, 348 p. :  ill. ;  27 cm. 
 - Translations of mathematical monographs,  v. 139 .
<br/><br/><label>ISBN: </label>0821846167 (alk. paper)