1. Amrein, W. O., Martin, Ph. A., Misra, B.: On the asymptotic condition of scattering theory. Helv. Phys. Acta43, 313?344 (1970); Corbett, J. V.: Galilean symmetry, measurement, and scattering as an isomorphism between two subalgebras of observables. Phys. Rev.D1, 3331?3344 (1970); Grosse, H., Gr�mm, H. R., Narnhofer, H., Thirring, W.: Algebraic theory of Coulomb scattering. Acta Phys. Aust.40, 97?103 (1974); Lavine, R. B.: Scattering theory for long range potentials. J. Funct. Anal.5, 368?382 (1970),12, 30?54 (1973), Ind. Univ. Math. J.21, 643?656 (1972); Mourre, E.: Quelques r�sultats dans la th�orie algebrique de la diffusion. Ann. Inst. Henri Poincar�18, 215?226 (1973); Prugove?ki, E.: On time-dependent scattering theory for long-range interactions. Nuovo CimentoB4, 105?123 (1971); Thomas, L. E.: J. Funct. Anal.15, 364?377 (1974)
2. Ruelle, D.: A remark on bound states in potential scattering theory. Nuovo Cimento61A, 655?662 (1969); Amrein, W. O., Georgescu, V.: On the characterization of bound states and scattering states in quantum mechanics. Helv. Phys. Acta46, 635?658 (1973); Section IV in [8]; Appendix to Section XI.17 in [22]
3. Dollard, J. D.: On the definition of scattering subspaces in nonrelativistic quantum mechanics. J. Math. Phys.18, 229?232 (1977)
4. Green, T. A., Lanford, O. E.: Rigorous derivation of the phase shift formula for the Hilbert space scattering operator of a single particle. J. Math. Phys.1, 139?148 (1960); Dollavd, J. D.: Scattering into Cones I: Potential scattering. Commun. Math. Phys.12, 193?203 (1969); References in [22]
5. Enss, V.: Asymptotic completeness for quantum-mechanical potential scattering II. Singular and long-range potentials. Ann. Phys. (N.Y.)119, 117?132 (1979); Perry, P. A.: Propagation of states in dilation analytic potentials and asymptotic completeness. Commun. Math. Phys.81, 243?259 (1981); Kitada, H., Yajima, K.: Duke Math. J.49, 341?376 (1982); Muthuramalingam PL., Sinha, K. B.: Asymptotic completeness in long range scattering I, preprint Indian Statistical Institute 1981