@article{GDZPPN002309262, title = {A Compact Operator Characterization of l1.}, journal = {Mathematische Annalen}, volume = {212}, year = {1974}, pages = {1-8}, zbl = {0261.46016}, url = {http://dml.mathdoc.fr/item/GDZPPN002309262} }
Randtke, Daniel J. A Compact Operator Characterization of l1.. Mathematische Annalen, Tome 212 (1974) pp. 1-8. http://gdmltest.u-ga.fr/item/GDZPPN002309262/