Gao F Liang, Yan L Zhu, Bo Sun, Fei H Hu, Tian Tian, Shu C Li and Zhong D Xiao*
* Corresponding author: Zhong D Xiao zdxiao@seu.edu
Nanoscale Research Letters 2011, 6:447 doi:10.1186/1556-276X-6-447
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