Kashefi, K., Seif, S. S., Yousefzadegan, M. S., Goodarzvand-Chegini, F., Pakseresht, S., & Bonyad, H. "Techno-economic Prioritization of Emission Reduction Methods in Iranian Gas Transmission Facilities", Iranian Journal of Gas Engineering, 5, 1, 2018, 21-36.