TY - JOUR AU - Stefan Hollands TI - Axiomatic Quantum Field Theory in Terms of Operator Product Expansions: General Framework, and Perturbation Theory via Hochschild Cohomology JO - Symmetry, integrability and geometry: methods and applications PY - 2009 VL - 5 UR - http://geodesic.mathdoc.fr/item/SIGMA_2009_5_a89/ LA - en ID - SIGMA_2009_5_a89 ER -