@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Ba2NaNb5O15 / P4bm (100) / materials id 15983},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Ba2NaNb5O15, P4bm (100)}
}