KUMAR, V.; RUZHANSKY, M.; ZHANG, R. Liouville type theorems for subelliptic systems on the Heisenberg group with general nonlinearity. Annales Fennici Mathematici, [S. l.], v. 49, n. 2, p. 561–582, 2024. DOI: 10.54330/afm.148660. Disponível em: https://afm.journal.fi/article/view/148660. Acesso em: 16 oct. 2024.