国际期刊Serial Correlation and Serial Dependence,forthcoming in The New Palgrave Dictionary in Economics, 2nd Edition.Asymmetries in Stock Returns: Statistical Tests and Economic Evaluation, with J. Tu and G. Zhuo, Review of Financial Studies 20 (2007), 1547-1581.Can the Random Walk Model be Beaten in Out-of-Sample Density Forecasts: Evidence from Intraday Foreign Exchange Rates, with H. Li and F. Zhao, Journal of Econometrics 141 (2007), 736-776.Model-Free Evaluation of Directional Predictability in Foreign Exchange Markets, with J. Chung, Journal of Applied Econometrics 22 (2007), 855-889.An improved generalized spectral test for time series models with conditional heteroskedasticity of unknown form, with Y. Lee, Econometric Theory 23 (2007), 106-154.Validating Forecasts of the Joint Probability Density of Bond Yields: Can Affine Models Beat Random Walk?, with A. Egorov and H. Li, Journal of Econometrics 135 (2006), 255-284.Asymptotic theory for entropy-based measure of serial dependence, with H.White, Econometrica 73 (2005), 837-901.Generalized spectral testing for conditional mean models in time series with conditional heteroskedasticity of unknown form, with Y. Lee, Review of Economic Studies 72 (2005), 499-541.Nonparametric specification testing for continuous-time models with applications to interest rate term structure, with H. Li, Review of Financial Studies 18 (2005), 37-84.Wavelet-based consistent testing for serial correlation in panel models, with C. Kao, Econometrica 72 (2004), 1519-1563.Out-of-sample performance of discrete-time short-term interest models, with H. Li and F. Zhao, Journal of Business and Economic Statistics 22 (2004), 457-473.Inference on predictability of foreign exchange rates via generalized spectrum and nonlinear time series models, with T. H. Lee, Review of Economics and Statistics, 85 (2003), 1048-1062.Diagnostic checking for the adequacy of nonlinear time series models, with T. H. Lee, Econometric Theory 19 (2003), 1065-1121.A test for volatility spillover with application to foreign exchange rates, Journal of Econometrics 103 (2001), 183-224.Generalized spectral tests for serial dependence,Journal of the Royal Statistical Society, Series B(Statistical Methodology), 62 (2000), 557-574.Hypothesis testing in time series via the empirical characteristic function: a generalized spectral density approach, Journal of the American Statistical Association 94 (1999), 1201-1220.Testing for independence between two covariance stationary time series, Biometrika 83 (1996), 615-625.Consistent testing for serial correlation of unknown form, Econometrica 64 (1996) 873-864.Consistent specification testing via nonparametric series regressions, with H. White, Econometrica 63 (1995), 1133-1159.China’s evolving managerial labor market, with T. Groves, J. McMillan and B. Naughton, Journal of Political Economy 103 (1995), 873-892.Autonomy and incentives in Chinese state enterprises,with T. Groves, J. McMillan and B. Naughton,Quarterly Journal of Economics CIX (1994), 183-209.