00941nam0-22002891i-450-9900010479904033210-521-24669-5000104799FED01000104799(Aleph)000104799FED0100010479920000920d1983----km-y0itay50------baengProceedings of the ninth International Conference on General Relativity and Gravitation, Jena, 14-19 July 1980Edited by Ernst SchmutzerCambridgeCambridge University Press1983RelativitàGravità530.11Schmutzer,Ernst40421ITUNINARICAUNIMARCBK99000104799040332123-13312494FI1FI1Proceedings of the ninth International Conference on General Relativity and Gravitation, Jena, 14-19 July 1980341136UNINAING01