Vocabulary of metrology PD 6461: Part 3: 1995 Guide to the expression of uncertainty in measurement, British Standards Institution (BSI), 1995.
2.
ISO 5168 (1978): Measurement of fluid flow — Estimation of uncertainty of flow rate measurement, International Organization for Standardization (ISO), 1978.
3.
ISO 5168TR (1998): Measurement of fluid flow — Evaluation of uncertainties, International Organization for Standardization (ISO), 1998.
4.
The density of natural gas mixtures, Watson J, National Engineering Laboratory (NEL), Gas Chromatograph Symposium, AMOCO, Aberdeen, 15 September 1997.
5.
Compressibility factors of natural gas and other related hydrocarbon gases, American Gas Association Report No. 8 (AGA8), Second Edition, November 1992, Errata 1993, Reprinted with corrections 1994.
