1. R. Akbarpour, and M. Khalkhali, Hopf algebra equivariant cyclic homology and cyclic homology of crossed product algebras. J. Reine Angew. Math., 559 (2003), 137–152.
2. R. Akbarpour, and M. Khalkhali, Equivariant cyclic cohomology of H-algebras. K-Theory 29 (2003), no. 4, 231–252.
3. A. Connes, Cohomologie cyclique et foncteurs Extn. (French) (Cyclic cohomology and functors Extn) C. R. Acad. Sci. Paris Sr. I Math. 296 (1983), no. 23, 953–958.
4. A. Connes, Noncommutative differential geometry. Inst. Hautes tudes Sci. Publ. Math. No. 62 (1985), 257–360.
5. A. Connes, Cyclic cohomology and the transverse fundamental class of a foliation. Geometric methods in operator algebras (Kyoto, 1983), 52–144, Pitman Res. Notes Math. Ser., 123, Longman Sci. Tech., Harlow, 198.