  The gravitational equations of the 5-dimensional analogue of the AdSS
space-time, where all the matter fields are confined on the 3-brane are
examined. The most general solutions are established in the generic case of a
non-Z_2-symmetric bulk. Constraining these solutions we derive a number of
remarkable metrics widely investigated in the literature. Finally, we make many
important conclusions about the viability of the presented scenario and
cosmology.
