1. Testing for market integration: Crude oil, coal, and natural gas;Bachmeir;The Energy Journal,2006
2. A theoretical macroeconometrics: A critique;Cooley;Journal of Monetary Economics,1985
3. International energy annual and country energy profiles;Energy Information Administration,1997
4. Identifying independence in bayesian networks;Geiger;Networks,1990
5. Computation, causation, and discovery;Glymour,1999