1. μ→eγ at a rate of one out of 109 muon decays?;Minkowski;Phys. Lett. B,1977
2. Horizontal gauge symmetry and masses of neutrinos;Yanagida;Conf. Proc. C,1979
3. The future of elementary particle physics;Glashow;NATO Sci. Ser. B,1980
4. Neutrino mass and spontaneous parity nonconservation;Mohapatra;Phys. Rev. Lett.,1980
5. Complex spinors and unified theories;Gell-Mann;Conf. Proc. C,1979