@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Na2Ca4ZrNbSi4O17F / P2_1 (4) / materials id 6903},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Na2Ca4ZrNbSi4O17F, P2_1 (4)}
}