Degasperis A & Gaeta G <br/><br/>
Symmetry and Perturbation Theory: Spt 98 

 -  World Scientific  WSPC  1999 
<br/><br/><label>ISBN: </label>9789812833037 
<br/><br/><label>Source: </label>EBOOK 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics