KATH, I.; UNGERMANN, O. Spectra of Sub-Dirac Operators on Certain Nilmanifolds. MATHEMATICA SCANDINAVICA, [S. l.], v. 117, n. 1, p. 64–104, 2015. DOI: 10.7146/math.scand.a-22237. Disponível em: https://www.mscand.dk/article/view/22237. Acesso em: 27 apr. 2024.