CJCU
Relaxivities of Gadolinium Heteropoly Complexes in Aqueous Solution for MRI Contrast Agent
LI Jian-Xin, CHEN Ya-Guang, LIU Qun, SUN Zhen-Gang, LIU Jing-Fu 
Chem. J. Chinese Universities . 2000, (4): 520 -521 .