Lecture notes were taken by three different scribes:
notes version 1,
notes version 2, or
notes version 3.
Grisha Perelman, The entropy formula for the Ricci flow and its geometric
Grisha Perelman, Ricci flow with surgery on three-manifolds, math.DG/0303109.
Grisha Perelman, Finite extinction time for the solutions to the Ricci flow on
certain three-manifolds, math.DG/0307245.
Huai-Dong Cao and Xi-Ping Zhu, A complete proof of the Poincaré and
geometrization conjectures---application of the Hamilton-Perelman theory of
the Ricci flow, Asian J. Math.
10 (2006), no. 2, 165-492.
John W. Morgan and Gang Tian, Ricci Flow and the Poincare
William P. Thurston, Three-dimensional manifolds, Kleinian groups and
hyperbolic geometry, Bull. Amer. Math. Soc. (N.S.) 6 (1982),
no. 3, 357-381.
Peter Scott, The geometries of $3$-manifolds, Bull. London Math. Soc.
15 (1983), no. 5, 401-487.
Huai-Dong Cao and Bennett Chow, Recent developments on the Ricci flow,
Bull. Amer. Math. Soc. (N.S.) 36 (1999), no. 1, 59-74.
John Milnor, Towards the Poincaré conjecture and the classification
of 3-manifolds, Notices Amer. Math.
Soc. 50 (2003), no. 10, 1226-1233.
Michael T. Anderson, Geometrization of 3-manifolds via the Ricci
Amer. Math. Soc. 51 (2004), no. 2, 184-193.
John W. Morgan, Recent progress on the Poincaré conjecture and
the classification of 3-manifolds, Bull. Amer. Math. Soc. (N.S.) 42 (2005), no. 1, 57-78
A related physics paper:
Matthew Headrick and Toby Wiseman, Ricci flow and black holes, hep-th/0606086.