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Boente, G., Ruiz, M. & Zamar, R.H., 2012. Bandwidth choice for robust nonparametric scale function estimation. COMPUTATIONAL STATISTICS & DATA ANALYSIS, 56, pp.1594-1608.
Boente, G., Ruiz, M. & Zamar, R.H., 2010. On a robust local estimator for the scale function in heteroscedastic nonparametric regression. STATISTICS & PROBABILITY LETTERS, 80, pp.1185-1195.
Pena, D., Zamar, R. & Yan, G., 2009. Bayesian likelihood robustness in linear models. JOURNAL OF STATISTICAL PLANNING AND INFERENCE, 139, pp.2196-2207.