Citation: Deng-Ke Cao; Yi-Zhi Li; You Song; Li-Min Zheng (2005). Three-, Two-, and One-Dimensional Metal Phosphonates Based on [Hydroxy(4-pyridyl)methyl]phosphonate: M{(4-C5H4N)CH(OH)PO3}(H2O) (M = Ni, Cd) and Gd{(4-C5H4N)CH(OH)P(OH)O2}3.6H2O . Inorganic Chemistry, 44, pp. 3599-3604.