Yoshida, N <br/><br/>
Oscillation theory of partial differential equations 
N. Yoshida 
 - Singapore  World Scientific  2008 
 - xi  326 
<br/><br/><label>ISBN: </label>9789812835437 
<br/><br/><label>Dewey Class. No.: </label>10.02+4.04  / YOSH