The effective action of the heterotic string compactified on manifolds   with SU(3) structure
  We derive the N=1 effective action of the heterotic string compactified on manifolds with SU(3) structure in the presence of background fluxes. We use a Kaluza-Klein reduction and compute the moduli dependence of the Kaehler potential, the gauge kinetic function and the superpotential entirely from fermionic terms of the reduced action. 
Iman Benmachiche, Jan Louis and Danny Martinez-Pedrera