1. Brenken, B.: Representations and automorphisms of the irrational rotation algebra.Pac. J. Math. 111 (1984), 257?282.
2. Connes, A.:C*-alg�bres et g�om�trie diff�rentielle.C. R. Acad. Sci. 290 (1980), 599?604.
3. Dupr�, M.J.;Fillmore, P.A.: Triviality theorems for Hilbert modules. In:Topics in modern operator theory, 5-th Internat. conf. on operator theory. Timisoara and Herculane (Romania), 1980. Birkh�user Verlag, Basel - Boston - Stuttgart 1981, 71?79.
4. Frank, M.: Self-duality and self-reflexivity of HilbertC*-modules.Z. Anal. Anwend. 9 (1990), 165?176.
5. Frank M.:Geometrical aspects of Hilbert C*-modules. K�benhavns Universitet preprint series 22/1993.