Citation: Guan-Cheng Xu; Wen Zhang; Xiao-Ming Ma; Yi-Hong Chen; Li Zhang; Hong-Ling Cai; Zhe-Ming Wang; Ren-Gen Xiong; Song Gao (2011). Coexistence of Magnetic and Electric Orderings in the Metal-Formate Frameworks of [NH4][M(HCOO)3]. Journal of the American Chemical Society, 133, pp. 14948-14951.