APA

Khalimov E., Feigin M., World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) & Feigin M.The principles of classification and oil resources estimation. : .

Chicago

Khalimov E.M, Feigin M.V, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Feigin M.V.The principles of classification and oil resources estimation. : .

Harvard

Khalimov E., Feigin M., World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Feigin M.The principles of classification and oil resources estimation. : .

MLA

Khalimov E.M, Feigin M.V, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Feigin M.V.: . .