Chen Yong-Xing, Qian Ling-Feng, Zhang Wei, Han Bing
State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou 730000, PR China.
Angew Chem Int Ed Engl. 2008;47(48):9330-3. doi: 10.1002/anie.200803381.