@article{DMPS_2015_35_1-2_a4,
     author = {Ferreira, Marta},
     title = {Estimating the extremal index through the tail dependence concept},
     journal = {Discussiones Mathematicae. Probability and Statistics},
     pages = {61--74},
     publisher = {mathdoc},
     volume = {35},
     number = {1-2},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMPS_2015_35_1-2_a4/}
}