Citation: Lai Zhuzhi; Fu Ruibiao; Hu Shengmin; Wu Xintao (2007). Syntheses, crystal structures, thermal stabilities, and magnetic and luminescent properties of 3D heterometal phosphonates: Na M [O3 P C H (O H) C O2] (M = Mn, Fe, Co, Zn). European Journal of Inorganic Chemistry, 2007, pp. 5439-5446.