Double-Flavor Oscillations and Properties of Heavy Mesons

Phenomenon of coherent double-flavor oscillations is discussed. They can arise when heavy flavored neutral mesons decay with production of neutral kaons. The oscillations may be used to study detailed properties of the heavy mesons and their decays. They may give new insight into the problem of CP-violation. In particular, they provide the only known way to the complete unambiguous measurements of CP-violating parameters for neutral B-meson decays. The corresponding experiments seem to be hard, but possible at hadron facilities.