I-Brane Inflow and Anomalous Couplings on D-Branes
  We show that the anomalous couplings of $D$-brane gauge and gravitational fields to Ramond-Ramond tensor potentials can be deduced by a simple anomaly inflow argument applied to intersecting $D$-branes and use this to determine the eight-form gravitational coupling. 
Michael Green, Jeffrey A. Harvey and Gregory Moore