D. Zhang, Z. Shi, W. J. Dong, W. S. Fu, S. H. Feng, “Hydrothermal synthesis and structural characterization of novel organically templated zincophosphites:[C6H4(CH 2NH3)2]·[Zn3(HPO3)4] and [CH3CH2CH2 NH3]2·[Zn3(HPO3)4]”,J. Solid State Chem., 2004, 177, 343-349.