1. Report of the Ad Hoc Committee on Chemical Weapons CD/1170, 26 August 1992
2. Recommended Operating Procedures for Sampling and Analysis in the Verification of Chemical Disarmament (1993) Ministry for Foreign Affairs of Finland, Helsinki
3. Franke S (1977) Lehrbuch der Militärchemie, Bd 1. Militärverlag der Deutschen Demokratischen Republik, Berlin
4. Haefner AM, Norton KL, Griffiths PR, Bourne S, Curbelo R (1988) Anal Chem 60:2441?2444
5. Bourne S, Haefner AM, Norton KL, Griffiths PR (1990) Anal Chem 62:2448?2452