1. Anderson, M.: Convergence and rigidity of manifolds under Bicci curvature bounds. Invent. Math.102, 429–445 (1990)
2. Anderson, M., Cheeger, J.:C ∞-compactness for manifolds with Ricci curvature and injective radius bounded below. (Preprint)
3. Berger, M.: Sur les variéstés riemanniennes pincées juste au dessous de 1/4. Ann. Inst. Fourier2, 33 (1983)
4. Cai, M.: A splitting theorem for manifolds of almost non-negative Ricci curvature. (Preprint)
5. Cheeger, J., Gromoll, D.: The splitting theorem for manifolds of nonnegative Ricci curvature. J. Differ. Geom.6, 119–128 (1971)