The Fundamental and Rigidity Theorems for Pseudohermitian Submanifolds in the Heisenberg Groups. Journal of Mathematical Study, [S. l.], v. 54, n. 1, p. 1–27, 2021. DOI: 10.4208/jms.v54n1.21.01. Disponível em: https://global-sci.com/index.php/jms/article/view/13384. Acesso em: 6 dec. 2025.