FISCHER, V. . Towards semi-classical analysis for sub-elliptic operators. Bruno Pini Mathematical Analysis Seminar, [S. l.], v. 12, n. 1, p. 31–52, 2021. DOI: 10.6092/issn.2240-2829/14182. Disponível em: https://mathematicalanalysis.unibo.it/article/view/14182. Acesso em: 26 apr. 2024.