Felmer, P. L. <br/><br/>
Variational methods in Hamiltonian systems/ 
P. L. Felmer. 
 - [1st ed.] 
 - Santiago do Chile:  Univ. Santiago de Chile,  1992. 
 - 30 p. 
<br/><br/><label>Dewey Class. No.: </label>515.39  / F322v