2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49505Recent developments in our understanding of neutrino masses and their implications for physics beyond the standard model are reviewed.36 pages, two figures; To appear in "Current Aspects of Neutrino Physics" Editor: D. Caldwell (Springer-Verlag); References updatedHigh Energy Physics - Phenomenologytext