Tagged photons in DIS with next-to-leading accuracy
  The leading and next-to-leading radiative corrections to deep inelastic events with tagged photons are calculated analytically. Comparisons with previous results and numerical estimations are presented for the experimental conditions at HERA. 
H. Anlauf (Siegen) A. B. Arbuzov, E. A. Kuraev (Dubna), N. P. Merenkov   (Kharkov)