IBRAGIMOV, N.H. <br/><br/>
Handbook of Lie Group Analysis of Differential Equations : Symmetries, Exact Sol 

 - London  CRC Press.  1994 
 - xiii, 429 
<br/><br/><label>ISBN: </label>0-8493-4488-3 
<br/><br/><label>Dewey Class. No.: </label>515.35