1. P. Petersen and C. Sprouse, Integral curvature bounds, distance estimates, and
    applications, J. Differential Geometry 50 (1998), p. 269-298.
2. P. Petersen and C. Sprouse, Eigenvalue pinching for Riemannian vector bundles,
    J. Reine angew. Math. 511 (1999), p. 73-86.
3. C. Sprouse, Integral curvature bounds and bounded diameter,
    Comm. Anal. Geom. 8 (2000), p. 531-543.
4. P. Petersen and C. Sprouse, Eigenvalue pinching on p-forms,
    Proceedings of the Fifth Pacific Rim Geometry conference, Tohoku University

Hopefully more to come soon...