@articleBeran_Feng_Heiler_2009, title=Modifying the double smoothing bandwidth selector in nonparametric regression, volume=6, DOI=10.1016/j.stamet.2009.04.001, number=5, journal=Statistical Methodology, publisher=Elsevier BV, author=Beran, Jan and Feng, Yuanhua and Heiler, Siegfried, year=2009, pages=447–465