Citation: Jacobson, A.J.; Collins, B.M.; Fender, B.E.F. (1976). A powder neutron and x-ray diffraction determination of the structure of Ba3 Ta2 Zn O9: an investigation of Perovskite phases in the system Ba-Ta-Zn-O and the preparation of Ba2 Ta Cd O5.5 and Ba2 Ce In O5.5.. Acta Crystallographica B (24,1968-38,1982), 32, pp. 1083-1087.