Hydrothermal Synthesis, Crystal Structure, and Properties of A 3D Holmium(III) Coordination Framework Based on the Pyridine 2,6-dicarboxylate and Oxalate Ligands. - Feng, Xun; Shi, Xin-Ge; Sun, Qian; Wang, Li-Ya; Zhao, Jian-She; Liu, Yong-Yong (Synthesis & Reactivity in Inorganic, Metal-Organic, & Nano-Metal Chemistry, 2010)