Relativistic Calculation of two-Electron one-Photon and Hypersatellite   Transition Energies for $12\leq Z\leq30$ Elements
  Energies of two-electron one-photon transitions from initial double K-hole states were computed using the Dirac-Fock model. The transition energies of competing processes, the K$\alpha$ hypersatellites, were also computed. The results are compared to experiment and to other theoretical calculations. 
M. C. Martins (CFA), A. M. Costa (CFA), J. P. Santos (CFA, DFFCT), F.   Parente (CFA), Paul Indelicato (LKB - Jussieu)