Ma Wenjun, Liu Luqi, Yang Rong, Zhang Taihua, Zhang Zhong, Song Li, Ren Yan, Shen Jun, Niu Zhiqiang, Zhou Weiya, Xie Sishen
Beijing National Laboratory of Condensed Matter Institute of Physics, Chinese Academy of Sciences Beijing 100190 (P. R. China).
Adv Mater. 2009 Feb 2;21(5):603-8. doi: 10.1002/adma.200801335.