1. Rolling Back Chemical Proliferation;Leonard;Arms Control Today,1992
2. the testimony of Brad Roberts in U.S. Congress, Chemical Warfare. Arms Control and Nonproliferation: Joint Hearing Before the Senate Committee on Foreign Relations and the Subcommittee on Energy, Nuclear Proliferation, and Government Processes, 98th Congress, 2d sess., 28 06 1984. pp. 60–61
3. The Paris Conference on the Prohibition of Chemical Weapons;Morel;Disarmament,1989
4. FBIS 19 01 1989, p. 21.
5. U.S. Congress, Chemical Warfare: Arms Control and Nonproliferation: Joint Hearing Before the Senate Committee on Foreign Relations and the Subcommittee on Energy, Nuclear Proliferation and Government Processes, 98th Congress, 2d sess., 28 06 1984, p. 34