A Least Squares Method for Variance Estimation in Heteroscedastic Nonparametric Regression. - Yuejin Zhou; Yebin Cheng; Tiejun Tong (J. Appl. Math., 2014)

Optimal difference-based estimation for partially linear models. - Yuejin Zhou; Yebin Cheng; Wenlin Dai; Tiejun Tong (Comput. Stat., 2018)