1. S. Hochberg, S. P. Y. Lee andR. Sibbel:Nucl. Phys. B,28, 308 (1971).
2. A. J. Dragt:J. Math. Phys. (N. Y.),6, 533 (1965).
3. D. S. Saloupis:Proceedings of the Ninth International Conference on the Few-Body Problem, Vol.1 (Eugene, Oreg., 1980), p. 1 and 18; Ph. D. Thesis (1979), University of London, unpublished.
4. L. D. Faddeev:Sov. Phys. JETP,12, 1014 (1961).
5. R. Sibbel: Ph. D. Thesis (1971), University of London, unpublished.