TY - JOUR AU - B. Jefferies AU - G. W. Johnson TI - Feynman's Operational Calculi for Noncommuting Systems of Operators: Tensors, Ordered Supports, and Disentangling an Exponential Factor JO - Matematičeskie zametki PY - 2001 SP - 815 EP - 838 VL - 70 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2001_70_6_a1/ LA - ru ID - MZM_2001_70_6_a1 ER -