CJCU
High-temperature and High-pressure Extraction of Lnn@C2n(Ln=Y,Gd,Tb)
SUN Shu-Qing, LIU Zhi-Qiang, XING Jun-Peng, LIU Shu-Ying 
Chem. J. Chinese Universities . 2002, (2): 300 -302 .