Citation: Catherine F. Smura; Dinah R. Parker; Mohamed Zbiri; Mark R. Johnson; Zolt\'an A. G\'al; Simon J. Clarke (2011). High-Spin Cobalt(II) Ions in Square Planar Coordination: Structures and Magnetism of the Oxysulfides Sr2CoO2Cu2S2 and Ba2CoO2Cu2S2 and Their Solid Solution. Journal of the American Chemical Society, 133, pp. 2691-2705.