Kolar, Martin, and Francine Meylan. “Nonlinear CR Automorphisms of Levi Degenerate Hypersurfaces and a New Gap Phenomenon”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 19, no. 3 (September 16, 2019): 847-868. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/662.