NATSUME, Toshikazu. The $C^*$-algebras of codimension one foliations without holonomy. MATHEMATICA SCANDINAVICA, [S. l.], v. 56, p. 96–104, 1985. DOI: 10.7146/math.scand.a-12090. Disponível em: https://tidsskrift.dk/math/article/view/12090. Acesso em: 13 aug. 2026.