@article{EXMATH_2000_2000_1_a14,
     author = {Mart{\'\i}n, Miguel},
     title = {Revisi\'on sobre el {\'\i}ndice num\'erico de un espacio de {Banach.}},
     journal = {Extracta mathematicae},
     pages = {265-276},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_2000_2000_1_a14/}
}