2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47861We consider the two schemes with four massive neutrinos which are compatible with the results of all neutrino oscillation experiments. We show that in these two schemes the probabilities of nu_e disappearance and nu_mu->nu_e appearance in long-baseline experiments are strongly suppressed.5 pages, including 2 figures. Talk presented by C. Giunti at the XXXIIInd Rencontres de Moriond: Electroweak Interactions and Unified Theories, Les Arcs 1800 (France), March 14-21 1998High Energy Physics - Phenomenologytext