Direct Observation of Pressure-Driven Valence Electron Transfer in Ba<sub>3</sub>BiRu<sub>2</sub>O<sub>9</sub>, Ba<sub>3</sub>BiIr<sub>2</sub>O<sub>9</sub>, and Ba<sub>4</sub>BiIr<sub>3</sub>O<sub>12</sub>Peter E. R. Blanchard, Chris D. Ling, Steve M. Heald et al.|Inorganic Chemistry|2016Cited by 8