Chanillo, Sagun, and Paul C. Yang. “Isoperimetric Inequalities & Volume Comparison Theorems on CR Manifolds”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 8, no. 2 (June 18, 2009): 279-307. Accessed May 29, 2025. http://20.103.181.36/index.php/annaliscienze/article/view/575.