Electron-Electron Scattering as a Probe of Anomalous Gauge Couplings
  The effect of anomalous gauge couplings on polarized $e^- e^-$ scattering cross sections is examined. It turns out that different combinations of beam polarizations provide constraints that are complementary to each other and to those obtained from other experiments, such as $e^+ e^-$, $e^- \gamma$ and $\gamma \gamma$ collisions. 
Debajyoti Choudhury and Frank Cuypers