2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48092We investigate the implications for neutrino mixing implied by the results of all neutrino oscillation experiments and by the standard Big-Bang Nucleosynthesis constraint on the number of light neutrinos.11 pages. Talk presented by C. Giunti at the Ringberg Euroconference "New Trends in Neutrino Physics", 24-29 May 1998, Ringberg Castle, Tegernsee, GermanyHigh Energy Physics - Phenomenologytext