There is an error in reference 21. The correct reference is: Takeda H, Farsiu S, and Milanfar P (2007) Kernel Regression for Image Processing and Reconstruction, IEEE Trans Image Process, 16( 2): 349-366.
Citation:Su L, Zhao Y, Yan T, Li F (2012) Correction: Local Polynomial Estimation of Heteroscedasticity in a Multivariate Linear Regression Model and Its Applications in Economics. PLoS ONE 7(11): 10.1371/annotation/01ebf0b5-ccd3-494d-b577-170981f7bc36. doi:10.1371/annotation/01ebf0b5-ccd3-494d-b577-170981f7bc36
Published: November 20, 2012
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Competing interests: No competing interests declared.