@article{MAN_1974__208_162552,
     author = {Daniel J. Randtke},
     title = {A {Compact} {Operator} {Characterization} of  l1.},
     journal = {Mathematische Annalen},
     pages = {1--8},
     publisher = {mathdoc},
     volume = {208},
     year = {1974},
     zbl = {0261.46016},
     url = {http://geodesic.mathdoc.fr/item/MAN_1974__208_162552/}
}