Le, V. T., T. H. Nguyen, H. D. Nguyen, and T. T. P. Nguyen. “Development of Gas Market for Ca Voi Xanh Project: Opportunity and Challenge”. Petrovietnam Journal, Vol. 1, Jan. 2017, pp. 66 -73, doi:10.25073/petrovietnam journal.v1i0.119.