Selection rules for the space group of Cu2O, at four symmetry points of the Brillouin zone K. Olbrychski, R. Kołlodziejski, M. Suffczyński et H. KunertJ. Phys. France, 36 10 (1975) 985-990DOI: https://doi.org/10.1051/jphys:019750036010098500
