IBRAHIMOV, N.H. <br/><br/>
CRC Handbook of Lie Group Analysis of Differential Equations: New Trends in Theo 

 - London.  CRC Press  1996 
 - xvi, 536 P 
<br/><br/><label>ISBN: </label>0-8493-9419-8 
<br/><br/><label>Dewey Class. No.: </label>515.35