1. OIML R 139 Edition(E), International Recommendation: Compressed gaseous fuel measuring systems for vehicles, International Organization of Legal Metrology, section 3.1.1; 2007: p. 14.
2. Measuring of compressed natural gas in automotive application: A comparative analysis of mass versus volumetric metering methods;Cascetta;Flow Meas Instrum,2008
3. Wright JD, Johnson AN. Uncertainty in primary gas flow standards due to flow work phenomena. Proceedings of the International Flow Measurement Conference, FLOMEKO, Salvador, Brazil; 2000.
4. NIST lowers gas flow uncertainties to 0.025% or less;Wright;NCSL Int Meas,2010
5. Performance of critical flow venturis under transient conditions;Wright;Meas Sci Technol,2010