Proceedings of the ninth international conference on general relativity and gravitation Jena, 14-19 July, 1980 - Cambridge: Cambridge University Press, 1983 - 312p. ISBN: 0-521-24669-5 Subjects--Topical Terms: General relativity Subjects--Index Terms: Gravitation Universal Decimal Class. No.: 530.12:531.51(082.2) / M3