A Study of the Isothermal Solubility of Ternary Systems CuSO4(ZnSO4)-CO(NH2)2-H2O at 30 ℃
ZHANG Feng-Xing, ZHAO Pei, YANG Qin, GUO Li-Juan, SHI Qi-Zhen
Chem. J. Chinese Universities . 1999, (10): 1499 -1503 .