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Motivated by experimental results on $\bar B\to D^{(*)}K^-K^{0}$, we use afactorization approach to study these decays. Two mechanisms concerning kaonpair production arise: current-produced (from vacuum) and transition (from the$B$ meson). The kaon pair in the $\bar B {}^0\to D^{(*)+}K^-K^0$ decays can beproduced only by the vector current (current-produced), whose matrix elementcan be extracted from $e^+e^-\to K\bar K$ processes via isospin relations. Thedecay rates obtained this way are in good agreement with experiment. The$B^-\to D^{(*)0}K^-K^0$ decays involve both current-produced and transitionprocesses. By using QCD counting rules and the measured $B^-\to D^{(*)0} K^-K^0$ decay rates, the measured decay spectra can be understood.Comment: 3 pages, 6 figures. Talk presented at EPS2003 Conference, Aachen,  Germany, July 200

Evidence for factorization in three-body $\overline B\to D^{(*)}\,K^-\,K^0$ decays