Problem of the Complete Measurement for CP-violating Parameters in   Neutral B-meson Decays
  Phenomenological CP-violating parameters in decays of neutral B-mesons are discussed. Special attention is given to the degree of their measurability. We emphasize important role of the sign of $\Delta m_B$ and suggest how it could be determined experimentally. 
Ya.I. Azimov, V.L.Rappoport, V.V. Sarantsev (Petersburg Nuclear   Physics Institute)