1. The American Gas Association, Distribution-System Design, AGA, Arlington, 1990.
2. H. Daneshyar, One-dimensional Compressible Flow, Pergamon Press, New York, 1976.
3. M.H. Goldwater, A.E. Fincham, in: H. Nicholson (Ed.), Modelling of Dynamical Systems, Peter Peregrinus, Stevenage, 1981.
4. J.P. Holman, Thermodynamics, McGraw-Hill, New York, 1980.
5. ISO 12213-3, Natural gas — calculation of compression factor. Part 3: Calculation using physical properties. International Organization for Standarization, Technical Committee ISO/TC 193, Natural gas, Sub committee SC1, Analysis of natural gas. Geneve, 1997.