Ghoussoub, N <br/><br/>
Duality and perturbation methods in critical point theory 
Nassif Ghoussoub 
 - New York  Cambridge University Press  2003 
 - xviii, 258 p. : ill. ; 24 cm. 
<br/><br/> Includes bibliographical references (p. [246]-253) and index 
<br/><br/><label>ISBN: </label>9780521440257 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Critical point theory (Mathematical analysis)<br/>Duality theory (Mathematics)<br/>Perturbation (Mathematics)
<br/><br/><label>Dewey Class. No.: </label>514.74 GHO