1. Ansley, C./Kohn, R.Wong, C. (1993): Nonparametric spline regression with prior information; Biometrika 80, 75–88.
2. Buja, A./Hastie, T./Tibshirani, R. (1989): Linear smoothers and additive models (with discussion); Ann. Statist. 17, 453–555.
3. Cleveland, W. (1979): Robust locally weighted regression and smoothing scatterplots; J. Am. Statist. Assoc. 74, 829–836.
4. Cleveland, W./Devlin, S./Terpenning, I. (1982): The SABL seasonal adjustment and calendar adjustment procedures; Time Series Analysis: Theory and Practice 1, 539–564, ed. sc O. Anderson New York: North Holland.
5. Cleveland, W./Grosse, E. (1991): Computational methods for local regression; Statistics and Computing 1, 47–62.