SALAMAH, Soha Ali. Studying in Lee groups and most important examples of it (Heisenberg group). Journal of natural sciences, life and applied sciences, New Mexico, United States, v. 4, n. 1, p. 59–45, 2020. DOI: 10.26389/AJSRP.S191019. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jnslas/article/view/2253. Acesso em: 19 dec. 2025.