1. Experimental study of hard photon radiation processes at HERA
2. Elastic ep scattering and the Weizsäcker-Williams approximation
3. J. Blümlein, G. Levman, H. Spiesberger, in: E.L. Berger (Ed.), Proc. of the Summer Study in High Energy Physics, Snowmass, June/July 1990, p. 554.
4. J. Blümlein, G. Levman, H. Spiesberger, in: Proc. of the Workshop on HERA: The New Frontier for QCD, Durham, England, March 1993, J. Phys. G 19 (1993) 1695.
5. QED Compton scattering in high-energy electron-proton collisions