Hydon, Peter E. <br/><br/>
Symmetry methods for differential equations  : a beginner's guide 
Peter E Hydon 
 - Cambridge  Cambridge University Press  2000 
 -  xi, 213p. 
<br/><br/> Includes index and bibliography 
<br/><br/><label>ISBN: </label>0-521-49786-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical physics
<br/><br/><label>Dewey Class. No.: </label>530.15535  / HYS