Relativistic study of nucleon electroweak properties in a constituent-quark model R. F. Wagenbrunn, S. Boffi, L. Ya Glozman, W. Klink, W. Plessas and M. Radici Eur. Phys. J. A, 18 2-3 (2003) 155-158 Published online: 22 October 2003 DOI: 10.1140/epja/i2002-10291-5