Electroweak properties of the nucleon in a chiral constituent quark   model
  Results for all elastic electroweak nucleon form factors are presented for the chiral constituent quark model based on Goldstone-boson-exchange dynamics. The calculations are performed in a covariant framework using the point-form approach to relativistic quantum mechanics. The direct predictions of the model yield a remarkably consistent picture of the electroweak nucleon structure. 
S. Boffi, M. Radici, L. Glozman, W. Plessas, R.F. Wagenbrunn and W.   Klink