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VDOS calculations for MgGeO_{3} have been determined by integrating phonon dispersions which were handled with DFPT where the "Brillouin-zone sampling for phonon states was computed on 14, 18, and 14 **q**-points" for all phases. Force constant matrices on the finer **q**-point grids were interpolated by applying the acoustic sum rule as indicated by Tsuchiya *et al*.