1[1]ISO/CD15112:2000,Natural gas- Energy determination
2[2]U. Klaas, Avoiding billion-dollar misunderstandings, ISO Bulletin September 2000), P.9
3[3]ISO13443:1996, Natural gas - Standard reference conditions
4[4]IS05167 - 1: 1991, Measurement of fluid flow by means of Pressure differential devices - Part 1: Orifice plates, nozzles and Venturi tubes inserted in circular cross- section conduits running full
5[5]IS09951:1993,Measurement of gas flow in closed conduits-Turbine meters
6[6]IS0/DIS15971 - 1: 1999, Natural gas - Measurement of properties - Conbustion properties - Part 1: Calorific value
7[8]ISO6974- 3:2000, Natural gas- Determination of composition with defined uncerainty by gas chromatography- Part 3:Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns
8[10]ISO6976: 1995, Natural gas - Calculation of calorific value,density, relative density and Wobbe index from composition
