1. Phillips, A.; Kerlins, V.; and Whiteson, B.V.: Electron Fractography Handbook - ML-TDR-64-416, Springfield, Va.: Clearinghouse, 1965, pp 1-6 to 1-59.
2. FELLows, J.A. (ed.) : Metals Handbook, Volume 9: Fractography and Atlas of Fractographs, Metals Park, Ohio, ASM, 1974, pp 24-63.
3. Ladd, M.W.: The Electron Microscope Handbook-Specimen Preparation and Related Laboratory Procedures, Burlington, Vt, Ladd Research Industries , 1973, pp 6-30.
4. Ultramicrostructures of the Human Tooth as Revealed by the Electron Microscope