2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/148083Our goal in this paper is to examine the discovery potential of laboratory experiments searching for the oscillation $ν_μ(ν_e) \rightarrow ν_τ$, in the light of recent data on solar and atmospheric neutrino experiments, which we analyse together with the most restrictive results from laboratory experiments on neutrino oscillations in a four-neutrino framework.}Latex file using sprocl.sty and psfig.tex appended at the end. 4 Figures uuencoded. Talk Given at the International Workshop on Elementary Particle Physics, Present and Future}, Valencia, Spain 5--9 June 1995High Energy Physics - Phenomenologytext