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A NONPARAMETRIC REGRESSION ESTIMATOR THAT ADAPTS TO ERROR DISTRIBUTION OF UNKNOWN FORM
Matzner-Lober, E., (2007)
A Simulation Comparison between Integration and Backfitting Methods of Estimating Separable Nonparametric Regression Models
Sperlich, S., (1997)
Nonparametric Regression
HÄRDLE, Wolfgang, (1995)