  A new relativistic field-theoretic formalism called "Asymptotic
Bethe-Salpeter State Method" (ABSSM) is presented, which allows to calculate
both electromagnetic formfactors and hadronic scattering and production
amplitudes of elementary and composite systems (being described by
Bethe-Salpeter amplitudes) within one theoretical framework. The ABSSM is then
applied to the deuteron as a composite system of two nucleons.
