@article{Essen_1994,
    title = {Locally Finite and Locally Nilpotent Derivations with Applications to Polynomial Flows, Morphisms, and G a -Actions. II},
    volume = {121},
    issn = {0002-9939},
    url = {http://dx.doi.org/10.2307/2160260},
    doi = {10.2307/2160260},
    number = {3},
    journal = {Proceedings of the American Mathematical Society},
    publisher = {JSTOR},
    author = {Essen, Arno Van Den},
    year = {1994},
    month = {jul},
    pages = {667},
    date-added = {2025-6-9 14:12:51 +0100}
}

@article{Essen_1994, title = {Locally Finite and Locally Nilpotent Derivations with Applications to Polynomial Flows, Morphisms, and G a -Actions. II}, volume = {121}, issn = {0002-9939}, url = {http://dx.doi.org/10.2307/2160260}, doi = {10.2307/2160260}, number = {3}, journal = {Proceedings of the American Mathematical Society}, publisher = {JSTOR}, author = {Essen, Arno Van Den}, year = {1994}, month = {jul}, pages = {667}, date-added = {2025-6-9 14:12:51 +0100} }