  By application of the 'geometric spectral inversion' technique, which we have
recently generalized to accommodate also singular interaction potentials, we
construct from spectral data emerging from the solution of the Minkowski-space
formulation of the homogeneous Bethe-Salpeter equation describing bound states
of two spinless particles a Schroedinger approach to such states in terms of
nonrelativistic potential models. This spectrally equivalent modeling of bound
states yields their qualitative features (masses, form factors, etc.) without
having to deal with the more involved Bethe-Salpeter formalism.
