On the treatment of the Δ-contributions in electromagnetic pp-knockout reactions C. Giusti, F. D. Pacati, M. Schwamb and S. Boffi Eur. Phys. J. A, 26 2 (2005) 209-220 Published online: 16 November 2005 DOI: 10.1140/epja/i2005-10162-7