Salamah, Soha Ali. “Studying in Lee Groups and Most Important Examples of It (Heisenberg Group)”. Journal of natural sciences, life and applied sciences 4, no. 1 (March 30, 2020): 59–45. Accessed December 19, 2025. https://www.ajsrp.ojsexpert.com/index.php/jnslas/article/view/2253.