  An approximate inverse scattering method [7,8] has been used to construct
separable potentials with the Laguerre form factors. As an application, we
invert the phase shifts of proton-proton in the $^1S_0$ and $^3P_2-^3F_2$
channels and neutron-proton in the $^3S_1-^3D_1$ channel elastic scattering. In
the latter case the deuteron wave function of a realistic $np$ potential was
used as input.
