1. C.W. Misner, K.S. Thorne, J.A. Wheeler, Gravitation (Freeman, San Francisco, 1973).
2. S. Weinberg, Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity (Wiley, New York, 1972).
3. I. Ciufolini, J.A. Wheeler, Gravitation and Inertia (Princeton University Press, Princeton, NJ, 1995).
4. C.M. Will, Theory and Experiment in Gravitational Physics, 2nd edition (Cambridge University Press, Cambridge, UK, 1993).
5. C.M. Will, Living Rev. Rel. 9, 3 (2006).