Heavy baryonia
  The relativistic six-quark equations are found in the framework of the dispersion relation technique. The charmed baryonia $B\bar B$ are constructed without the mixing of the quarks and antiquarks. The relativistic six-quark amplitudes of the heavy baryonia are calculated. The poles of these amplitudes determine the masses of baryonia. 8 masses of charmed baryonia are predicted. 
S.M. Gerasyuta and E.E. Matskevich
hep-ph