Atmospheric neutrino results from Super-Kamiokande and Kamiokande -   Evidence for nu_mu oscillations -
  New atmospheric neutrino results from Super-Kamiokande are presented. Results from Kamiokande on upward going muons are also presented. All these data, together with the Kamiokande atmospheric neutrino data give evidence for neutrino oscillations. Two flavor nu_mu <-> nu_tau oscillations, with large sin^2(2theta) and Delta-m^2 in the region of 10^-3 to 10^-2, explain all these data. 
Takaaki Kajita (for the Super-Kamiokande and Kamiokande   collaborations)