Marmo, G., et al <br/><br/>
Dynamical systems  differential geometric approach to symmetry & reduction 
G. Marmo, et al 
 - Chichester  John Wiley & Sons  1985 
 - xii  377 
<br/><br/><label>ISBN: </label>0471903396 
<br/><br/><label>Dewey Class. No.: </label>12.01  / MARM