1. Dando, M. Scientific Outlook for the Development of Incapacitants, in Pearson, A., Chevrier, M. and Wheelis, M. (eds), Incapacitating Biochemical Weapons, Lanham, MD: Lexington Books, 2007, p. 125.
2. Aas, P. The Threat of Mid-Spectrum Chemical Warfare Agents, Prehospital and Disaster Medicine, volume 18, number 4, 2003, pp. 306–312.
3. Dando, M. (2007) op.cit., pp. 125–126.
4. Davison, N. “Off the Rocker” and “On the Floor”: The Continued Development of Biochemical Incapacitating Weapons, Bradford Science and Technology Report No. 8, Bradford Disarmament Research Centre, August 2007, pp. 2–4; Davison, N. “Non-Lethal” Weapons, Basingstoke, UK: Palgrave Macmillan, 2009.
5. RUSI Defence Studies;J Hemsley,1987