TSYGAN, B. L. On the Gauss-Manin connection in cyclic homology. Methods of Functional Analysis and Topology, [S. l.], v. 13, n. 1, p. 83–94, 2007. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/339. Acesso em: 16 dec. 2025.