Freudenburg, Gene <br/><br/>
Algebraic theory of locally nilpotent derivations  / 

 - Berlin:  Springer-Verlag,  2006 
 - xi, 261p. Index 
 - Invariant theory and algebraic transformation groups ; VII .
<br/><br/><label>ISBN: </label>9783540295211 
<br/><br/><label>Dewey Class. No.: </label>512  / F889.AT