LIBRARY General relativity and gravitation : proceedings of the 11th International Conference on General Relativity and Gravitation, Stockholm, July 6-12, 1986 1987 · ENGLISH · PDF View details →
LIBRARY Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity 1972 · ENGLISH · PDF View details →
LIBRARY Entwurf einer verallgemeinerten Relativitätstheorie und einer Theorie der Gravitation 1913 · GERMAN · PDF View details →