1. Spline smoothing with model-based penalties;Ramsay;Behav. Res. Methods Instrum. Comput.,1997
2. Nonparametric Regression and Generalized Linear Models;Green,1994
3. Smoothing Spline ANOVA Models;Gu,2013
4. Functional Data Analysis;Ramsay,2005
5. A Practical Guide to Splines;de Boor,2001