Smoothing Spline Estimation for Partially Linear Single-index Models. - Bartholomew Leung; Heung Wong; Riquan Zhang; Shengtong Han (Commun. Stat. Simul. Comput., 2010)

Testing the significance of index parameters in varying-coefficient single-index models. - Heung Wong; Riquan Zhang; Bartholomew Leung; Zhensheng Huang (Comput. Stat. Data Anal., 2013)