Christodoulou, Demetrios <br/><br/>
The action and partial differential equations / 
D. Christodoulou. 
 - Princeton, N.J. :  Princeton University Press,  2000. 
 - VIII, 319 p. :  fig. ;  23 cm. 
 - Annals of mathematics studies  146 .
<br/><br/>Index pp. 315-319 
<br/><br/><label>ISBN: </label>0-691-04956-4  0-691-04957-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differetial equations, Hyprbolic<br/>Symplectic manifolds