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Z.H. Sun, G.H. Zhang, X.Q. Wang, G. Yu, L.Y. Zhu, H.L. Fan and D. Xu
Journal of Crystal Growth 311 ( 13 ): 3455 - 3460 , 2009
H Bessembinder, K. M Kahle, W. F Maxwell and D. Xu
Review of Financial Studies 22 ( 10 ): 4219 - 4258 , 2009