1. The principles of mechanical neutron-velocity selection
2. R. Scherm, T. Springer, Unpublished Report of ILL Grenoble, 1967.
3. R.E. Lechner, in: Neutron Scattering in the ‘Nineties, IAEA, Vienna, 1985, pp. 401–407
4. R.E. Lechner, F. Douchin, Y. Blanc, R. Scherm, Unpublished Internal Reports of ILL Grenoble and KFA Jülich, 1973
5. see also M. Bée, Quasielastic Neutron Scattering, Adam Hilger, Bristol, 1988 pp. 81–85.