1. J. S. Levinger:Two- and three-body problems, lecture notes (Orsay, 1973), to be published inSpringer Tracts in Modern Physics.
2. D. J. Ernst, C. M. Shakin andR. M. Thaler:Phys. Rev. C,8, 46, 2056 (1973);9, 1780 (1974).
3. G. Pisent:Finite-rank potentials in the two-body scattering problem, lectures given at theExtended Seminar on Nuclear Physics, Trieste, 1973, to be published inHeavy Ions, High Spin States and Nuclear Structure (Vienna).
4. L. D. Faddeev: inThree-Body Problem in Nuclear and Particle Physics, edited byJ. S. C. Mc Kee andP. M. Rolph (Amsterdam, 1970), p. 154.
5. GY. Bencze:Nucl. Phys.,196 A, 135 (1972).