- https://www.gazprom-germania.de/en/company/profile/facts-and-figures.html

- https://www.gazprom-germania.de/en/all-about-natural-gas/from-gazprom-to-you/production.html

- https://www.gazprom-germania.de/en/all-about-natural-gas/from-gazprom-to-you/transport.html

- https://www.gazprom-germania.de/en/all-about-natural-gas/from-gazprom-to-you/storage.html

- http://reports2.equitystory.com/cgi-bin/show.ssp?companyName=gazprom&report_id=if-2012&language=English !!!!!!!

- http://www.gazprom.com/about/production/projects/deposits/

- http://store.businessmonitor.com/russia-oil-gas-report.html (need to check if can access for free)