1. Accord Européen Relatif au Transport des Merchandises Dangereuses par Route (European Agreement concerning the International Carriage of Dangerous Goods by Road),1993
2. BUWAL. Handbuch III zur Störfallverordnung, Richtlinien für Verkehrswege, Bundesamt für Umwelt, Wald und Landschaft, Berne, (in German language), December 1992.
3. BVH 585.30. Handbok, Säkerhet I Järnvägstunnlar, Ambitionsnivå och värderingsmetodik, Banverket, 1997-09-01. (Handbook, Safety in Railway Tunnels, in Swedish language).
4. Council directive 96/82/EC of 9 December 1996 on the control of major accidents involving dangerous substances. Official Journal of the European Comminities, 14 January 1997. This is the latest revision of the original directive 82/501/EC dated 24 June 1982.
5. DS/INF 85 1 udgave. Risikoanalyse: Kvalitetskrav, terminologi (Risk analysis: requirements and terminology) (Danish Standard in Danish language), februar 1993.