MAGNOT, J.-P. On a class of closed cocycles for algebras of non-formal, possibly unbounded, pseudodifferential operators. Methods of Functional Analysis and Topology, [S. l.], v. 28, n. 4, p. 324–332, 2022. DOI: https://doi.org/10.31392/MFAT-npu26_4.2022.04. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/842. Acesso em: 15 dec. 2025.