Citation: Kennedy, Brendan J.; Howard, Christopher J.; Knight, Kevin S.; Zhang, Zhaoming; Zhou, Qingdi (2006). Structures and phase transitions in the ordered double perovskites Ba~2~Bi^III^Bi^V^O~6~ and Ba~2~Bi^III^Sb^V^O~6~. Acta Crystallographica Section B, 62, pp. 537-546.