@misc{atsushi-a,
  title = {Ab-initio phonon calculation for Rb7NbAs4 / Pmn2_1 (31) / materials id 18440},
  author = {Atsushi Togo},
  publisher = {NIMS},
  year = {},
  keywords = {Phonon, Rb7NbAs4, Pmn2_1 (31)}
}