First Measurement of the Inclusive Branching Ratio of b Hadrons to phi   Mesons in Z0 Decays
  The inclusive production rate of phi mesons from the decay of b hadrons produced in Z0 decays was measured to be Br(b->phi+X) = 0.0282+-0.0013(stat.)+-0.0019(syst.), using data collected by the OPAL detector at LEP. 
The OPAL collaboration, G.Abbiendi, et al