1. R.G. Newton, Scattering Theory of Waves and Particles (Mc-Graw-Hill, New York, 1982)
2. J.R. Taylor, Scattering Theory: The Quantum Theory of Non-Relativistic Collisions (John Wiley & Sons Inc, New York, 1972)
3. G.C. Sett, U. Laha, B. Talukdar, J. Phys. A: Math. Gen. 21, 3643 (1988)
4. H. van Haeringen, Charged Particle Interactions- Theory and Formulas (The Coulomb Press, Leyden, 1985)
5. U. Laha, Few-Body Sys. 59, 68 (2018)