J. Ducke et al., YTTRIUM AND TITANIUM BISMUTHATES WITH STRUCTURES RELATED TO BETA-BI2O3, Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 1329-1331
Y and Ti atoms in Bi7.5Y0.5O12 and Bi7.68Ti0.32O12.16 replace Bi atoms
in the structure of beta-Bi2O3 with additional O atoms completing the
ir coordination polyhedra, Anti-glass disorder is indicated by neutron
diffraction and EXAFS.