TY - JOUR AU - Siamak Khademi AU - Sadollah Nasiri TI - Operator Gauge Symmetry in QED JO - Symmetry, integrability and geometry: methods and applications PY - 2006 VL - 2 UR - http://geodesic.mathdoc.fr/item/SIGMA_2006_2_a12/ LA - en ID - SIGMA_2006_2_a12 ER -