Protter, Murray H. Weinberger, Hans F. <br/><br/>
Maximum principles in differential equations 

 - New York  Springer-Verlag  1984 
 - x, 261p.  22 cm.  HB 
 - Prentice-Hall partial differential equations series .
<br/><br/><label>ISBN: </label>0387960686 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Differential equations,partial
<br/><br/><label>Dewey Class. No.: </label>515.353  / PRO