Citation: Takeuchi, Y.; Ozawa, T. (1975). The structure of Cu4 Bi4 S9 and its relation to the structures of covellite, CuS and bismuthinite, Bi2 S3. Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (145,1977-148,1979), 141, pp. 217-232.