1. Tectonic position and structure of the South Emba uplift;Aisenstadt;Geotektonika,1979
2. Devonian rocks of the eastern flank of the North Caspian basin;Akhmetshina;Otechestvennaya Geologiya,1993
3. Oil and Gas Potential of Pre-Salt Deposits;Aksenov,1985
4. Pre-salt carbonate reservoirs of the Saratov part of the Precaspian Depression: new targets for oil and gas exploration;Aleksandrov;Geologiya Nefti i Gaza,1982
5. Precaspian Depression escarpment, its structure and oil and gas potential;Alekseev;Geologiya Nefti i Gaza,1976