@article{CMUC_1995_36_4_a3,
     author = {Gonzalo, Raquel},
     title = {Upper and lower estimates in {Banach} sequence spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {641--653},
     year = {1995},
     volume = {36},
     number = {4},
     mrnumber = {1378687},
     zbl = {0851.46016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1995_36_4_a3/}
}