CJCU
Synthesis and Crystal Structure of Lanthanum Complex of 1-Methyl-1,4,7,10-Tetraazacycl ododecane
WEI Ping-rong, JIN Tian-zhu, XU Guang-xian, JIN Zhong-Sheng
Chem. J. Chinese Universities . 1992, (4): 437 -440 .