1. M. von Allmen, Laser Beam Interactions with Materials (Springer-Verlag, Berlin, 1987).
2. N. Itoh and K. Tanimura, Rad. Eff. 98 (1986) 269 and N. Itoh and T. Nakayama, Nucl. Instrum. Meth. in Phys. Research B13 (1986) 550..
3. Y. Toyozawa, Vacuum Ultraviolet Radiation Physics, eds. E. E. Koch, R. Haensel and C. Kunz (Pergamon, Braunschweig, 1974), p. 317.
4. E. I. Rashba, Excitons, eds. E. I. Rashba and M. D. Sturge (North Holland, Amsterdam, 1982), p. 543.
5. W. Hayes and A. M. Stoneham, Defects and Defect Processes in Nonmetallic Solids (John Wiley, New York, 1984).