MODERN PHYSICS LETTERS A, cilt.13, sa.9, ss.685-693, 1998 (SCI-Expanded)
We investigate a particular breaking chain of the grand unification group E-6. With two smallest Higgs multiplets that have Yukawa couplings to fermions, we obtain a reasonable mass spectrum for fermions. The neutrino masses are expressed in terms of the masses of the charged fermions, leading to a predictive neutrino spectrum.