1. C. Anantharaman-Delaroche, Classification des C*-algebres purement infinies nucleaires (d’apres E. Kirchberg). Séminaire Bourbaki, Vol. 1995/96. Astérisque
241 (1997), 7–27.
2. B. Blackadar, K-theory for Operator Algebras, Second Edition, MSRI Publications 5, Cambridge University Press, Cambridge, 1998.
3. K. Brown, Buildings, Springer-Verlag, New York, 1989.
4. K. Brown, Five lectures on buildings, Group Theory from a Geometrical Viewpoint (Trieste 1990), 254–295, World Sci. Publishing, River Edge, N.J., 1991.
5. D. I. Cartwright, A brief introduction to buildings, Harmonic Functions on Trees and Buildings (New York 1995), 45–77, Contemp. Math. 206, Amer. Math. Soc, 1997.