TY  - JOUR
AU  - Duncan, Richard
TI  - On 2-Summing Operators
JO  - Canadian mathematical bulletin
PY  - 1974
SP  - 493
EP  - 498
VL  - 17
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-087-5/
DO  - 10.4153/CMB-1974-087-5
ID  - 10_4153_CMB_1974_087_5
ER  -