The general relation between the weak inclusive decays of bound and free   heavy quarks
  We derive a new parton formula for the inclusive B decays and briefly discuss its applications to semileptonic and weak radiative decays of the B-meson. 
S.Kotkovsky, I.M.Narodetskii, K.A.Ter-Martirosyan (ITEP, Moscow) and   S.Simula (INFN, Sezione Roma III)