Protter, Murray H.  (1918-2008). <br/><br/>
Maximum principles in differential equations / 
Murray H. Protter, Hans F. Weinberger. 
 - New York :  Springer,  1999. 
 - X, 261 s. :  il. ;  24 cm. 
<br/><br/>Bibliogr. s. 240-255. Indeks. 
<br/><br/>
<br/><br/><label>ISBN: </label>0387960686 
<br/><br/><label>Universal Decimal Class. No.: </label>51