1. μ→eγ at a rate of one out of 109 muon decays?;Minkowski;Phys. Lett. B,1977
2. Horizontal symmetry and masses of neutrinos;Yanagida;Conf. Proc.,1979
3. Complex spinors and unified theories;Gell-Mann;Conf. Proc.,1979
4. The problem of mass;Weinberg;Trans. N. Y. Acad. Sci.,1977
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