4Liang, F.-Y., Ryvak, M., Sayeed, S., et al. The role of natural gas as a primary fuel in the near future including comparisons of acquisition, transmis- sion and waste handling costs of as with competitivealternatives[J]. Chem. Cent. J., 2012 6 ($4).
5Mahmood F-G, Mahdi D-D, Rahbari H.R. Studying effects of storage types on performance of CNG filling stations[J]. Journal of Natural Gas Science and Engineering, 2011(3): 334-340.