Investigation of the Neutron Form Factors by Inclusive Quasi-Elastic   Scattering of Polarized Electrons off Polarized $^{3}$He: A Theoretical   Overview
  The theory of quasi-elastic inclusive scattering of polarized leptons off polarized $^3$He is critically reviewed and the origin of different expressions for the polarized nuclear response function appearing in the literature is explained. The sensitivity of the longitudinal asymmetry upon the neutron form factors is thoroughly investigated and the role played by the polarization angle for minimizing the proton contribution is illustrated. 
C. Ciofi degli Atti, E. Pace and G. Salm\`e