@misc{atsushi-a,
  title = {Ab-initio phonon calculation for NaCa9Mg(PO4)7 / R3c (161) / materials id 9467},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, NaCa9Mg(PO4)7, R3c (161)}
}