1. V.F. Sears, Neutron Optics, Oxford Series on Neutron Scattering in Condensed Matter, Oxford University Press, Oxford, 1989, p. 71.
2. Imaging and focusing of neutrons by a zone plate
3. High-efficiency multilevel zone plates for keV X-rays
4. M. Altissimo, C. Petrillo, F. Sacchetti, F. Ott, E. Di Fabrizio, Proceedings of the International Conference on Micro and Nano Engineering, Cambridge, UK, 22–25 September 2003.