Elizbar A. Nadaraya: On estimating regression. In: Theory of Probability and its Applications. Band9, Nr.1, 1964, S.141–142, doi:10.1137/1109020.
jstor.org
W.S. Cleveland: Robust Locally Weighted Regression and Smoothing Scatterplots. In: Journal of the American Statistical Association. Band74, Nr.368, Dezember 1979, S.829–836, JSTOR:2286407.
