Citation: Gaudin, E.; Boucher, F.; Petricek, V.; Taulelle, F.; Evain, M. (2000). Structures and phase transitions of the A7PSe6 (A = Ag, Cu) argyrodite-type ionic conductors. II. beta- and gamma-Cu7PSe6 Note: T = 293 K. Acta Crystallographica, Section B, 56, pp. 402-408.