1. Chemical Warfare Agents
2. bJoy, R. J.Historical Aspects of Medical Defense Against Chemical Warfare: Textbook of Military Medicine, Part I: Warfare, Weaponry, and the Casualty;Office of the Surgeon General at TMM Publications:Washington, DC, 1997; Vol.3, pp87–109.
3. History of chemical and biological warfare agents
4. aSomani, S. M.; Romano, J. A.InChemical Warfare Agents;CRC Press:Washington, DC, 2001; p447.
5. aMcWilliams, J. L.; Steel, R. J.Gas! The Battle for Ypres;Vanwell Publishing Limited:St. Catherines, Canada, 1915; p1985.