Tamba, J. G., Essiane, S. N., Sapnken, E. F., Koffi, F. D., Nsouandélé, J. L., Soldo, B., & Njomo, D. (2018). Forecasting Natural Gas: A Literature Survey. International Journal of Energy Economics and Policy, 8(3), 216–249. Retrieved from https://econjournals.com/index.php/ijeep/article/view/6269