@misc{atsushi-a,
  title = {Ab-initio phonon calculation for NaMg4(AsO4)3 / I-42d (122) / materials id 17771},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, NaMg4(AsO4)3, I-42d (122)}
}