1. W. Pauli, Theory of Relativity, Dover, New York (1981).
2. V. A. Fock, Theory of Space, Time and Gravitation, Pergamon, New York–London (1959).
3. S. Weinberg, Gravitation and Cosmology. Principles and Applications of the General Theory of Relativity, John Wiley and Sons, New York–London–Sydney (1972).
4. L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 2: The Classical Theory of Fields, Pergamon Press, Oxford–London (1962).
5. Graduate Texts in Mathematics Part I. The Geometry of Surfaces, Transformation Groups, and Fields;B. A. Dubrovin,1984