The separating variety for the basic representations of the additive group by Dufresne, E, Kohls, M

A finite separating set for Daigle and Freudenburg's counterexample to Hilbert's fourteenth problem by Dufresne, E, Kohls, M

The Cohen-Macaulay property of separating invariants of finite groups by Dufresne, E, Elmer, J, Kohls, M