@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Na3AlP3NO9 / P2_13 (198) / materials id 6860},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Na3AlP3NO9, P2_13 (198)}
}