1. von Sonntag C, Schuchmann H-P (1986) Int J. Radiat Biol 49: 1.
2. von Sonntag C (1987) The Chemical Basis of Radiation Biology. Taylor and Francis, London, New York, Philadelphia.
3. Bernhard WA (1981) Advan Radiat Biol 9: 199.
4. Close DM (1993) Radiat Res 135: 1.
5. Steenken S (1992) Free Radical Res Comm 16: 349.