Ibragimov, N. H. <br/><br/>
Elementary lie group analysis and ordinary differential equations / 
N. H. Ibragimov. 
 - 1st ed. 
 - [S.l.] :  Wiley,  1999. 
 - 366 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0471974307 9780471974307 
<br/><br/><label>Dewey Class. No.: </label>515.352