@article{CLTM_1993_1993_1_a7,
     author = {Dierolf, Susanne},
     title = {El problema de los tres espacios y el levantamiento de conjuntos acotados.},
     journal = {Collectanea mathematica},
     pages = {81-89},
     publisher = {mathdoc},
     volume = {44},
     number = {1-2-3},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1993_1993_1_a7/}
}