1. On a new kind of rays;Röntgen;Nature,1896
2. X-Ray Diffraction Procedures for Polycrystalline and Amorphous Materials;Klug,1974
3. Biographical Encyclopedia of Science and Technology;Asimov,1975
4. Physical Chemistry 4th ed;Barrow,1979
5. Smithells Metals Reference Book 7th ed;Brandes,1992