@article{10_4064_cm_38_2_255_258,
     author = {Joe Howard},
     title = {On $l_1}$-singular operators},
     journal = {Colloquium Mathematicum},
     pages = {255--258},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {1977},
     doi = {10.4064/cm-38-2-255-258},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-38-2-255-258/}
}