Citation: Xin-min Gan; Iris Binyamin; Brian M. Rapko; Jesse Fox; Eileen N. Duesler; Robert T. Paine (2004). Hydrogen Bonded Framework Structures Constructed from 2-(Pyridyl N-oxide) Methylphosphonic Acid Ligands and Erbium(III). Inorganic Chemistry, 43, pp. 2443-2448.