A general relativistic argument for dark matter existence without   invoking non-Keplerian rotation curves and gravitational-lensing data
  This paper has been withdrawn by the authors because the ratio presented in Eq. (13) does not remain frozen in time for all values of w = p/rho. As such a separate more detailed analysis containing the generalized Buchdahl inequality valid for all values of w is required. The new analysis will in addition attend to the time evolution of the ratio (13). The essential results remain unchanged, but result from the w=0 case. 
C. G. Boehmer