1. The Ricci Flow: An Introduction;Chow,2004
2. The Ricci flow in dimension three;Hamilton;J. Differ. Geom.,1982
3. Three manifolds with positive Ricci curvature;Hamilton;J. Differ. Geom.,1982
4. Four Manifolds with Positive Ricci Curvature, Vol. 24;Hamilton,1986
5. Deforming metrics in the direction of their Ricci tensors;De Turck;J. Differ. Geom.,1983