1. “Synthesis and properties of charge-ordered thallium halide perovskites, CsTl_0.5^+Tl_0.5^3+X_3 (X = F or Cl) : theoretical precursors for superconductivity?”. Retuerto M, Emge T, Hadermann J, Stephens PW, Li MR, Yin ZP, Croft M, Ignatov A, Zhang SJ, Yuan Z, Jin C, Simonson JW, Aronson MC, Pan A, Basov DN, Kotliar G, Greenblatt M;, Chemistry of materials 25, 4071 (2013).   http://doi.org/10.1021/cm402423x