1[1]AGA, Manual for the determination of supercompressibility factors for natural gas, Dec. , 1962
2[2]AGA Transmission measurement committee report No. 8, compressibility factors of natural gas and other related hydrocarbon gases,2nd Printing,July, 1994
3[3]ISO 12213 - 1997(E),Natural gas-calculation of compression Factor
4[4]Eclingto R T etc. , Gas Proc. Ass. , Fifth Annual Convention, P193 5.Qun Li and Tian - min Guo, J. Pet. Sci. Eng. , 1991; (6): 235