References
- British Standards Institution . 1981 . Instruments for the Detection of Combustible Gases , London : BSI . Parts 1 to 5. Document BS6020
- European Committee for Electrotechnical Standardisation . 1991 . Electrical Apparatus for the Detection and Measurement of Combustible Gases , Brussels : CENELEC . Document EN 50054-58
- International Electrotechnical Committee . Electrical Apparatus for the Detection and Measurement of Flammable Gases . Preliminary Draft for discussion at SC31L meeting, Australia . September 3–4 . IEC/SC31L.
- International Organisation for Legal Metrology . March 1989 . 2nd Predraft of International OIML Recommendation, Catalytic Sensing Ekleximeters (explosimeters) , March , Paris : OIML .
- European Committee for Standardisation . March 1991 . General Requirements for the Performance of Procedures for Workplace Measurements , March , Brussels : CEN . Document PrEN 482
- British Standards Institution . 1991 . Electrical Apparatus for the Detection of Toxic Gases in Workplace Air, 8th draft , London : BSI .