%0 Journal Article %A Gomes, D. %A Neves, Maria %T Extremal behaviour of stationary processes: the calibration technique in the extremal index estimation %J Discussiones Mathematicae. Probability and Statistics %D 2010 %P 21-33 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMPS_2010_30_1_a1/ %G en %F DMPS_2010_30_1_a1