Two-photon contributions to the Rosenbluth cross-section in the Skyrme   model
  We study two-photon contributions to the elastic electron nucleon scattering within the Skyrme model. In particular we focus on the role of the anomaly that enters via the Wess-Zumino term and explain how this induces an axial current interaction. 
M. Kuhn and H. Weigel