@article{MAN_1973__200_162354,
     author = {N.J. Kalton},
     title = {On {Absolute} {Bases.}},
     journal = {Mathematische Annalen},
     pages = {209--226},
     publisher = {mathdoc},
     volume = {200},
     year = {1973},
     zbl = {0234.46006},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__200_162354/}
}