Synthesis and Luminescent Properties of  CaF2 and CaF2∶Yb3+ Mulberry-like Nanostructures
LIU Ji-Hong, HOU Su-Ying, XU Wei, LIU Xian-Chun, YU Xiao-Dan, LIU Bo, SUN Xiu-Juan, XING Yan*
Chem. J. Chinese Universities . 2011, (8): 1680 -1683 .