Elastic scattering via quark structure of nucleons M. M. H. El-Gogary, A. Y. Ellithi, M. Kh. Hegab and A. A. Mohamed Eur. Phys. J. A, 24 1 (2005) 137-147 Published online: 25 February 2005 DOI: 10.1140/epja/i2004-10127-4