Ibragimov Nail H <br/><br/>
Elementary Lie group analysis and ordinary differfential equations 

 -  1999 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>23140 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B33:1, N9