Ding, Y <br/><br/>
Variational methods for strongly indefinite problems 
Y. Ding 
 - Singapore  World Scientific  2007 
 - viii  668 
 - Interdisplinary mathematical sciences 7 .
<br/><br/><label>ISBN: </label>9789812709622 
<br/><br/><label>Dewey Class. No.: </label>4.13  / DING