Gao, Jiti and Tong, Howell (2002): Nonparametric and semiparametric regression model selection. Unpublished.
Dong, Chaohua; Gao, Jiti and Tong, Howell (2006): Semiparametric penalty function method in partially linear model selection. Published in: Statistica Sinica , Vol. 17, No. 1 (October 2007): pp. 99-114.
