1. Energy and Economic Theory;Banks,2015
2. Agendas: Political;Baumgartner,2001
3. What To Do (and Not to Do) with Time-Series Cross-Section Data
4. EU Gas Industry Reforms and Consumers' Prices
5. Statistical Review of World Energyhttps://www.bp.com/content/dam/bp-country/de_de/PDFs/brochures/BP-statistical-review-of-world-energy-2014-full-report.pdf