Fraenkel, L. E <br/><br/>
An introduction to maximum principles and symmetry in elliptic problems 

 - Cambridge:  Cambridge Univeristy Press,  2008 
 - x, 340 p. : ill. ; 24 cm 
<br/><br/><label>ISBN: </label>9780521461955 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Elliptic
<br/><br/><label>Dewey Class. No.: </label>515.3533 FRA