Quark Masses and Mixing with A4 Family Symmetry
  The successful A4 family symmetry for leptons is applied to quarks, motivated by the quark-lepton assignments of SU(5). Realistic quark masses and mixing angles are obtained, in good agreement with data. In particular, we find a strong correlation between |V_{ub}| and the CP phase beta, thus allowing for a decisive future test of this model. 
Ernest Ma, Hideyuki Sawanaka and Morimitsu Tanimoto