TY - JOUR AU - Joe Howard TI - On $l_1}$-singular operators JO - Colloquium Mathematicum PY - 1977 SP - 255 EP - 258 VL - 38 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-38-2-255-258/ DO - 10.4064/cm-38-2-255-258 LA - en ID - 10_4064_cm_38_2_255_258 ER -