Robust estimating equations and bias correction of correlation parameters for longitudinal data. - Guoyou Qin; Zhong Yi Zhu; Wing K. Fung (Comput. Stat. Data Anal., 2008)

Penalized quadratic inference functions for single-index models with longitudinal data. - Yang Bai; Wing K. Fung; Zhong Yi Zhu (J. Multivar. Anal., 2009)

Joint estimation of mean-covariance model for longitudinal data with basis function approximations. - Jie Mao; Zhong Yi Zhu; Wing K. Fung (Comput. Stat. Data Anal., 2011)

Variable selection in robust regression models for longitudinal data. - Yali Fan; Guoyou Qin; Zhong Yi Zhu (J. Multivar. Anal., 2012)

Robust empirical likelihood inference for generalized partial linear models with longitudinal data. - Guoyou Qin; Yang Bai; Zhong Yi Zhu (J. Multivar. Anal., 2012)

Simultaneous mean and covariance estimation of partially linear models for longitudinal data with missing responses and covariate measurement error. - Guoyou Qin; Jiajia Zhang; Zhong Yi Zhu (Comput. Stat. Data Anal., 2016)

Analysis of longitudinal data with covariate measurement error and missing responses: An improved unbiased estimating equation. - Huiming Lin; Guoyou Qin; Jiajia Zhang; Zhong Yi Zhu (Comput. Stat. Data Anal., 2018)