2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202889Simple, self-similar, analytic solutions of 1 + 1 dimensional relativistic hydrodynamics are presented, generalizing the Hwa - Bjorken boost-invariant solution to inhomogeneous rapidity distributions. These solutions are generalized also to 1 + 3 dimensional, cylindrically symmetric firetubes, corresponding to central collisions of heavy ions at relativistic bombarding energies.16 pages, 2 figures, final form, hep-ph/0203204 and 0204300 are combined, list of references to earlier works and applications is improvedNuclear Theorytext