1. Report on the COVO study to the Rijnmond authority, Reidel; 1979.
2. EU Directive 82/501EEC; 1982.
3. Tweede Kamer der Staten Generaal, zitting 1978–1979 15300 Hoofdstuk III nr 12.
4. Het interim standpunt LPGstations, HIMH, The Netherlands; 1978.
5. HSE. Canvey: an investigation of potential hazards from operations in the Canvey Island/Thurrock Area, London (HMSO); 1978.