TY - JOUR AU - Frank B. Estabrook TI - Exterior Differential Systems for Yang–Mills Theories JO - Symmetry, integrability and geometry: methods and applications PY - 2008 VL - 4 UR - http://geodesic.mathdoc.fr/item/SIGMA_2008_4_a62/ LA - en ID - SIGMA_2008_4_a62 ER -