This volume contains definitive papers on high energy astrophysics by every expert in the field.
Details and many other links can be found on the U.Hawaii Super-Kamiokande page.
The Super-Kamiokande experiment page is here.
To see my article on the media coverage of the announcement, published in Skeptical Briefs, go here.
The "smoking gun" is the zenith angle distribution of muon
neutrinos,
which differs from expectations by more than six standard deviations.
Although
I am a co-author on the discovery paper and other Super-Kamiokande
publications,
my personal role on this experiment was a small one. However, I
have
worked on the problem of neutrino oscillations for many years. In
particular,
see my paper, linked below, in the Proceedings
of the
Neutrino
Mass Mini-Workshop, Telemark, Wisconsin, 1980, which may be
the first place the (rather obvious) idea of looking at zenith
angle
distributions appeared in print.
Neutrino
Oscillations in DUMAND