@misc{atsushi-a,
  title = {Ab-initio phonon calculation for SrAlSi4N7 / Pna2_1 (33) / materials id 570577},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, SrAlSi4N7, Pna2_1 (33)}
}