@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Pr2Ti2O7 / P2_1 (4) / materials id 15201},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Pr2Ti2O7, P2_1 (4)}
}