@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Ba3Ti2O7 / Fmm2 (42) / materials id 770118},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Ba3Ti2O7, Fmm2 (42)}
}