New probes of anomalous $WW\gamma$ couplings at future $e^+e^-$ linacs
  We investigate the sensitivity of single photon plus missing energy cross-sections at future $e^{+}e^{-}$ linacs to non-standard $WW\gamma$ couplings. We show that even with conservative estimates of systematic errors there is still considerable sensitivity to anomalous couplings. Analytic expressions for helicity amplitudes are presented. 
K.J. Abraham, J. Kalinowski and P. Sciepko