Some Liouville Type Theorems for the P-sub-Laplacian on the Group of Heisenberg Type. Journal of Partial Differential Equations, [S. l.], v. 21, n. 3, p. 193–207, 2008. Disponível em: https://global-sci.com/index.php/jpde/article/view/4118. Acesso em: 6 dec. 2025.