Citation: Wojciech Miiller; Matthew T. Dunstan; Zixin Huang; Zakiah Mohamed; Brendan J. Kennedy; Maxim Avdeev; Chris D. Ling (2013). Complex 5d Magnetism in a Novel S= 1/2 Trimer System, the 12L Hexagonal Perovskite Ba4BiIr3O12. Inorganic Chemistry, 52, pp. 12461-12467.