Journal of Zhejiang University-SCIENCE A
Journal of Zhejiang University-SCIENCE A > 2009 > 10 > 3 > 434-438
Journal of Zhejiang University-SCIENCE A > 2009 > 10 > 9 > 1320-1326
Journal of Zhejiang University-SCIENCE A > 2009 > 10 > 3 > 434-438
Journal of Zhejiang University-SCIENCE A > 2009 > 10 > 9 > 1320-1326