Electromagnetic form factor via Bethe-Salpeter amplitude in Minkowski space J. Carbonell, V. A. Karmanov and M. Mangin-Brinet Eur. Phys. J. A, 39 1 (2009) 53-60 Published online: 11 December 2008 DOI: 10.1140/epja/i2008-10690-6