@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Na2CaTi2(GeO4)3 / I4_1/acd (142) / materials id 695511},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Na2CaTi2(GeO4)3, I4_1/acd (142)}
}