1. P.W. Levy, G.J. Dienes, Report of Bristol Conference on Defects in Crystalline Solids, The Physical Society, London, 1955, p. 256.
2. Atomic displacement and ionization effects on the optical absorption and structural properties of ion‐implanted Al2O3
3. Radiation damage in Al2O3 crystals implanted with 3.8 MeV Fe2+ ions
4. Stopping Power and Ranges of Ions in Matter;Ziegler,1985
5. J.P. Biersack, in: P. Mazzoldi, G.W. Arnold, (Eds.), Ion Beam Modification of Insulators, Elsevier, Amsterdam, 1987, p. 39.