Potassium doping effect on the lattice softening and electronic structure of Ba<sub>1–<i>x</i></sub>K<sub><i>x</i></sub>Fe<sub>2</sub>As<sub>2</sub>probed by X-ray absorption spectroscopyJie Cheng, Z. Y. Wu, L. J. Zhang et al.|Journal of Synchrotron Radiation|2010Cited by 16