1. R. Trapp, SIPRI Chemical & Biological Warfare Studies. 3. The Detoxification and Natural Degradation of Chemical Warfare Agents, Taylor & Francis, Philadelphia, PA, 1985, p. 104.
2. Military Chemical and Biological Agents Chemical and Toxicological Properties;Compton,1987
3. Casarett & Doull's Toxicology;Klaassen,2001
4. US Chemical Weapons Convention, Accessed on October 2004, http://www.cwc.gov