%0 Journal Article %A Gomes, M. %A Henriques-Rodrigues, LĂ­gia %T Comparison at optimal levels of classical tail index estimators: a challenge for reduced-bias estimation? %J Discussiones Mathematicae. Probability and Statistics %D 2010 %P 35-51 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMPS_2010_30_1_a2/ %G en %F DMPS_2010_30_1_a2