Kutzschebauch, Frank, and Matthias Leuenberger. “Lie Algebra Generated by Locally Nilpotent Derivations on Danielewski Surfaces ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 15, no. special (February 25, 2016): 183-207. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/420.