Olver, Peter J <br/><br/>
Applications of lie groups to differential equations 
Peter J Olver 
 - 23 
 - Springer-Verlag, New York  2000 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations-- Analysis-- Mathematics
<br/><br/><label>Dewey Class. No.: </label>515.35  OLV-A2