@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Hf2P2O9 / C2/m (12) / materials id 555344},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Hf2P2O9, C2/m (12)}
}