Electromagnetic form factors of nucleons in a relativistic three-quark   model
  We report the calculation of electromagnetic form factors of nucleons within a relativistic three-quark model with Gaussian shape for the nucleon-quark vertex. The allowed region for two adjustable parameters, the range parameter $\Lambda_N$ in the Gaussian and the constituent quark mass $m_q$, is obtained from fitting the data for magnetic moments and electromagnetic radii of nucleons. The shapes of electric and magnetic nucleon form factors calculated in this approach with the central parameters $m_q$=420 MeV and $\Lambda_N$=1.25 GeV are close to the data for momentum transfers $0\le Q^2\le 1$ GeV$^2$ 
M.A.Ivanov (PSI, Villigen & JINR, Dubna), M.P.Locher (PSI, Villigen),   V.E.Lyubovitskij (PSI, Villigen & JINR, Dubna & Toms...