Exact Parametrization of The Mass Matrices and The KM Matrix
  We analyze properties of general quark mass matrices. The up and down part quark mass matrices are written in terms of six dimensionless parameters and six quark masses. It is shown that two of the former six dimensionless parameters can be chosen to be any value. Once values for these two parameters are chosen, Kobayashi-Maskawa matrix is written in terms of the remaining four parameters. Our results are given analytically without any approximation. 
K. Harayama, N. Okamura (Department of Physics, Nagoya University)