1. J.D. Wright, The long term calibration stability of critical flow nozzles and laminar flowmeters, in: Proceedings of the NCSL Workshop and Symposium, Albuquerque, NM: NCSL, 1998, pp. 443–462
2. ISO 9300, Measurement of Gas Glow by Means of Critical Flow Venturi Nozzles, 2005
3. R.C. Johnson, Real-Gas effects in Critical-flow-through Nozzles and Tabulated Thermodynamic Properties, NASA Technical Note, 1965
4. A. Aschenbrenner, The Influence of Humidity on the Flow Rate of Air Through Critical Flow Nozzles, Flomeko, 1983, pp. 71–74.
5. C.L. Britton, R.W. Caron, T. Kegel, The critical flow function C* for humid air. Fluids Engineering Division Summer Meeting – FEDSM. Washington DC, USA, 1998