1. B. BlackadarK-theory for operator algebrasSpringer Verlag, 1986
2. K. BragielThe twisted SU(N)
On the C*-algebra C(SU
μ
(N)Letters. Math. Phys.20(1990), 251–157
3. J. DixmierC*-algebrasNorth Holland, 1977
4. V. DrinfeldQuantum Croups
I.C.M.Berkeley, 1986
5. H.T. KoelinkOn *-representations of the Hopf *-algebra associated with the quantum group U
q
(N)Compositio Math.77(1991), 199–231