2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36042This paper has been withdrawn by the author. A revised and expanded version is gr-qc/9907028 (Phys.Rev. D60 (1999) 104043).General Relativity and Quantum CosmologyRelativistic hydrodynamic accretion onto a spherical black holetext