Stormark, Olle. <br/><br/>
Lie's structural approach to PDE systems   
by Olle Stormark 
 - Cambridge  Cambridge University Press  2000 
 - xv, 572p. 
 - Encyclopedia of mathematics and its applications  80 .
<br/><br/><label>ISBN: </label>0521780888 
<br/><br/><label>Dewey Class. No.: </label>515.353  / P3