@misc{atsushi-a,
  title = {Ab-initio phonon calculation for NaLa4I7N2 / Pna2_1 (33) / materials id 569580},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, NaLa4I7N2, Pna2_1 (33)}
}