On the supersymmetric non-abelian Born-Infeld action
  We review an iterative construction of the supersymmetric non-abelian Born-Infeld action. We obtain the action through second order in the fieldstrength. Kappa-invariance fixes the ordenings which turn out to deviate from the symmetrized trace proposal. 
E. A. Bergshoeff, M. de Roo and A. Sevrin