REFERENCES
- Deveney , J. K. and Finston , D. R. 1994 . Fields of Ga-Invariants are Ruled . Canadian Mathematical Bulletin , 37 : 37 – 41 .
- Deveney , J. K. and Finston , D. R. 1997 . On locally Trivial Ga-Actions . Transformation Groups , 2 : 137 – 145 . Birkhäuser Boston
- Deveney , J. K. and Finston , D. R. 2000 . Twin Triangular Derivations . Osaka Journal of Mathematics , 37 : 15 – 21 .
- van den Essen , A. R.P. 1993 . An Algorithm to Compute the Invariant Ring of a Ga-Action on an Affine Variety . Journal of Symbolic Computation , 16 : 531 – 555 .
- Nagata , M. 1965 . Notes on The Fourteenth Problem of Hilbert Edited by: Pavaman , Murthy M. Bombay : Tata Institute of Fundamental Research .
- Snow , D. M. 1989 . “ Unipotent actions on affine space ” . In Topological Methods in Algebraic Transformation Groups Edited by: Kraft , H. , Petrie , T. and Schwarz , G. W. Vol. 80 , Progress in Mathematics . Birkhäuser Boston, Inc., Proceedings from the Cnference ‘Topological Methods in Algebraic Transformation Groups’ held at Rutgers University, April 4–8, 1988
- Winkelmann , J. 1990 . On Free Holomorphic C-Actions on Cnand Homogenous Stein Manifolds . Math. Ann. , 286 : 593 – 612 .