Annual reports of PJSC "Gazprom oil". URL: http://ir.gazprom-neft.ru/news-and-reports/annual-reports/
   Aref'eva (Iskritskaya) N.I. Ekonomicheskaya effektivnost' khimizatsii osnovnykh protsessov dobychi nefti [Economic efficiency of chemicalization of basic processes of oil]. Thesis for scientific degree of candidate of economic sciences; Funds Ufa Petroleum Institute. Ufa, 1986, 153 p.
   Aref'eva (Iskritskaya) N.I., Bedrosyan E.N. Ekonomicheskaya effektivnost' metodov povysheniya nefteotdachi plastov s uchetom energozatrat [Economic efficiency of EOR methods considering energy costs]. Ekonomika i upravlenie neftyanoy promyshlennosti, 1984, no. 12, p. 8-11.
   Aref'eva (Iskritskaya) N.I., Milyavskaya M.B. K metodike opredeleniya ekonomicheskoy effektivnosti primeneniya khimproduktov dlya povysheniya nefteotdachi plastov [On the method of determining the economic efficiency of the use of chemical products for the EOR]. Interuniversity collection "Khimicheskaya pererabotka nefti i gaza", KKhTI, Kazan', 1985, p. 49-50.
   Brandt A.R. and Dale M. A General Mathematical Framework for Calculating Systems-Scale Efficiency of Energy Extraction and Conversion: Energy Return on Investment (EROI) and Other Energy Return Ratios. Energies. – 2011. – №4. – P. 1211-1245.
   Brandt A.R., Englander J., BharadwajS. The energy efficiency of oil sands extraction: Energy return ratios from 1970 to 2010. Energy. – 2013. – Vol. 55. – P.693-702. doi:10.1016/j.energy.2013.03.080
   Energeticheskie subsidii v sovremennom mire. Strany «Gruppy dvadtsati» [Energy subsidies in the modern world. Countries of "Group of Twenty"]. Editors L.M. Grigor'ev, A.A. Kurdin. Moscow: OOO «AsminPrint», 2014. - 400 p.
   Hall C.A.S., Dale B.E. and Pimentel D. Seeking to Understand the Reasons for Different Energy Returnon Investment (EROI) Estimates for Biofuels. Sustainability. – 2011. - №3. – P. 2413-2432. doi: 10.3390/su3122413
   Luzin V.I. Ekonomicheskaya effektivnost' tekhnicheskogo progressa v neftyanoy promyshlennosti [The economic efficiency of technological progress in the oil industry]. Moscow: Nedra, 1982, 160 p.
   Metody i modeli prognoznykh issledovaniy vzaimosvyazey energetiki i ekonomiki [Methods and models of forecasting studies the relationships of energy and the economy]. Yu.D. Kononov, E.V. Gal'perova, D.Yu. Kononov i dr. Novosibirsk: Nauka, 2009, 178 p.
   Murphy D.J. and Hall C.A.S. Year in review - EROI or energy return on (energy) invested. Ann. N.Y. Acad. Sci. – 2010. - №1185. - P. 102–118.
   Murphy D.J., Hall C.A.S., Dale M. and Cleveland C. Order from Chaos: A Preliminary Protocol for Determining the EROI of Fuels. Sustainability. – 2011. - №3. – Р.1888-1907.
   Safronov A.F., Sokolov A.N. Energeticheskaya effektivnost' razrabotki zapasov bituminoznykh peskov i goryuchikh slantsev. Opyt SShA i Kanady [The energy efficiency of development of reserves of bitumenous sands and oil shale. Experience of the USA and Canada]. Neftegazovaya geologiya. Teoriya i praktika, 2015, vol. 10, no. 3, available at: http://www.ngtp.ru/rub/3/25_2015.pdf. – http://dx.doi.org/10.17353/2070-5379/25_2015
   Safronov A.F., Sokolov A.N. Predvaritel'nyy raschet energeticheskoy effektivnosti dobychi nefti, gaza i proizvodstva svetlykh nefteproduktov v Rossii [A preliminary calculation of the energy efficiency of oil, gas and light oil production in Russia]. Neftegazovaya geologiya. Teoriya i praktika, 2014, vol. 9, no. 3, available at: http://www.ngtp.ru/rub/3/34_2014.pdf – DOI: http://dx.doi.org/10.17353/2070-5379/34_2014