1. Seasonal fluctuations of demand and optimal inventories of a non-renewable resource such as natural gas;Amundsen;Resources and Energy,1991
2. Pooling cross section and time series data in the estimation of a dynamic model: the demand for natural gas;Balestra;Econometrica,1966
3. The Political Economy of World Energy: An Introductory Textbook;Banks,2007
4. Bernstein, M., Holtberg, P., Santana-Ortiz, D., 2002. Implications and policy options of California's reliance on natural gas. RAND Monograph Report. Available at: 〈http://www.rand.org〉.
5. BP Statistical Review, 2007. Available at: 〈http://www.bp.com〉.