Quark momentum-space charge distribution in deuteron and neutron/proton structure functions ratio M. Modarres, M. M. Yazdanpanah and F. Zolfagharpour Eur. Phys. J. A, 32 3 (2007) 327-333 Published online: 05 June 2007 DOI: 10.1140/epja/i2006-10375-2