1. Cobordism Massey products;Alexander;Trans. Am. Math. Soc.,1972
2. Cobordism classes of squares of orientable manifolds;Anderson;Ann. Math.,1966
3. The index of elliptic operators, III;Atiyah;Ann. Math.,1968
4. Théorie bivariante de Kasparov et opérateurs non bornés dans les C*-modules hilbertiens;Baaj;C.R. Acad. Sci. Paris Sér. I Math.,1983
5. B. Blackadar, K-Theory for Operator Algebras, Math. Sci. Res. Inst. Publ., vol. 5, Springer, New York, Berlin, 1986, second ed., Cambridge University Press, Cambridge, New York, 1998.