2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50020We argue that a certain distribution of matter in higher dimensions can provide the correct behaviour of gravity in four dimensions. Some explicit examples illustrating the idea are considered.8 pages, latex2e, 3 eps figures, misprints corrected and reference addedHigh Energy Physics - TheoryGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenologytext