Moser, J & Zehnder, E.J <br/><br/>
Notes on dynamical systems 
J. Moser & E.J. Zehnder 
 - Providence  American Mathematical Society  2005 
 - vii  256 
 - Courant lecture notes 12 .
<br/><br/><label>ISBN: </label>9780821835777 
<br/><br/><label>Dewey Class. No.: </label>12.01+12.05  / MOSE