The analysis of multivariate longitudinal data using multivariate marginal models. - Hyunkeun Cho (J. Multivar. Anal., 2016)

Model specification test in a semiparametric regression model for longitudinal data. - Hyunkeun Cho; Seonjin Kim (J. Multivar. Anal., 2017)

Multiple quantile regression analysis of longitudinal data: Heteroscedasticity and efficient estimation. - Hyunkeun Cho; Seonjin Kim; Mi-Ok Kim (J. Multivar. Anal., 2017)