1. Historical overview of biological warfare;Eitzen,1997
2. De Mussi and the great plague of 1348: a forgotten episode of bacteriological war;Derbes;JAMA,1966
3. The rise of CB weapons;Stockholm International Peace Research Institute (SIPRI),1971
4. The evolution of preventive medicine in the United States army, 1607–1939;Bayne-Jones,1968
5. Jenner's smallpox vaccine;Baxby,1981