NMR INVESTIGATION OF INTERACTION OF GLYC YL-L-LEUCINE WITH Ho (ClO43 AND Yb (ClO43 IN AQUEOUS SOLUTION
Ren Jinan, Niu Chunji, Pei Fengkui, Wang Wenyun, Ni Jiazan
Chinese Journal of Magnetic Resonance . 1991, (1): 89 -98 .