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Y.L. Qi, Z. Wang, J.X. Wang, and X. He

K. Shen, Z.H. Huang, W.C. Shen, J.H. Yang, G.Z. Yang, S.Y. Yu, and F.Y. Kang

C. Wang, J.X. Ding, S.R. Tan, and W.H. Han

K. Sun, P. Zhang, C.K. Law, and T.Y. Wang